study guide for content mastery - teacher editionkennedyhigh.org/view/11028.pdf · chemistry:...

3
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc. T206 Chemistry: Matter and Change Study Guide for Content Mastery Answer Key Name Date Class 98 Chemistry: Matter and Change • Chapter 17 Study Guide for Content Mastery For each item in Column A, write the letter of the matching item in Column B. Column A Column B 11. Expresses the average rate of loss of a reactant a. average reaction rate 12. Expressed as quantity/time b. positive number 13. Expresses the average rate of formation of a product c. negative number Use the figure below to answer the following questions. 14. What molecules collided in collisions A, B, and C? 15. What do the arrows represent? The arrows represent the direction and the amount of energy of the moving molecules. 16. Which collision(s) formed products? What were the products? 17. Explain why the other collision(s) did not form products. Collision A did not form products because the carbon atom in the CO molecule did not contact an oxygen atom in the NO 2 molecule. Collision C did not form products because the CO molecule and the NO 2 molecule did not collide with sufficient energy. 18. Which collision(s) formed an activated complex? Identify the activated complex. Collision B; the activated complex is an OCONO molecule. Collision B; CO 2 and NO CO and NO 2 Incorrect orientation Rebound Correct orientation Collision Collision Activated complex Products Correct orientation Insufficient energy Rebound Collision A B C b a c Section 17.1 continued STUDY GUIDE FOR CONTENT MASTERY CHAPTER 17 Name Date Class Study Guide for Content Mastery Chemistry: Matter and Change • Chapter 17 97 Reaction Rates Reaction Rates Section 17.1 A Model for Reaction Rates In your textbook, read about expressing reaction rates and explaining reactions and their rates. Use each of the terms below just once to complete the passage. According to the (1) , atoms, ions, and molecules must collide in order to react. Once formed, the (2) is a temporary, unstable arrangement of atoms that may then form products or may break apart to reform the reactants. This physical arrangement is known as the (3) . Every chemical reaction requires energy, and the minimum amount of energy that reacting particles must have to form the activated complex is the (4) . In a chemical reaction, the (5) is the change in concentration of a reactant or product per unit time. It may be expressed using the units of (6) . Use the energy diagram for the rearrangement reaction of methyl isonitrile to acetoni- trile to answer the following questions. 7. What kind of reaction is represented by this diagram, endothermic or exothermic? exothermic 8. What is the chemical structure identified at the top of the curve on the diagram? the activated complex 9. What does the symbol E a represent? the activation energy 10. What does the symbol E represent? the net energy released from the exothermic reaction mol/L s reaction rate activation energy transition state activated complex collision theory STUDY GUIDE FOR CONTENT MASTERY CHAPTER 17 collision theory activated complex transition state activation energy reaction rate mol/(L s) Reaction Progress H 3 CNC H 3 CCN a Energy E E a H 3 C ... C N

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Page 1: Study Guide for Content Mastery - Teacher Editionkennedyhigh.org/view/11028.pdf · Chemistry: Matter and Change • For each item in Column A, ... Chapter 17 Study Guide for Content

Cop

yrig

ht ©

Gle

ncoe

/McG

raw

-Hill

,a d

ivis

ion

of th

e M

cGra

w-H

ill C

ompa

nies

,Inc

.

T206 Chemistry: Matter and Change Study Guide for Content Mastery Answer Key

Nam

eD

ate

Cla

ss

98C

hem

istr

y: M

atte

r an

d C

han

ge

• C

hap

ter

17St

ud

y G

uid

e fo

r C

on

ten

t M

aste

ry

For

eac

h it

em in

Col

umn

A,w

rite

the

lett

er o

f th

e m

atch

ing

item

in C

olum

n B

.

Col

umn

AC

olum

n B

11.

Exp

ress

es th

e av

erag

e ra

te o

f lo

ss o

f a

reac

tant

a.

aver

age

reac

tion

rate

12.

Exp

ress

ed a

s �

quan

tity/

�tim

eb

.po

sitiv

e nu

mbe

r

13.

Exp

ress

es th

e av

erag

e ra

te o

f fo

rmat

ion

of a

pro

duct

c.ne

gativ

e nu

mbe

r

Use

the

fig

ure

belo

w t

o an

swer

the

fol

low

ing

ques

tion

s.

14.

Wha

t mol

ecul

es c

ollid

ed in

col

lisio

ns A

,B,a

nd C

?

15.

Wha

t do

the

arro

ws

repr

esen

t?

The

arro

ws

rep

rese

nt

the

dir

ecti

on

an

d t

he

amo

un

t o

f en

erg

y o

f th

e

mo

vin

g m

ole

cule

s.

16.

Whi

ch c

ollis

ion(

s) f

orm

ed p

rodu

cts?

Wha

t wer

e th

e pr

oduc

ts?

17.

Exp

lain

why

the

othe

r co

llisi

on(s

) di

d no

t for

m p

rodu

cts.

Co

llisi

on

A d

id n

ot

form

pro

du

cts

bec

ause

th

e ca

rbo

n a

tom

in t

he

CO

mo

lecu

le

did

no

t co

nta

ct a

n o

xyg

en a

tom

in t

he

NO

2m

ole

cule

. Co

llisi

on

C d

id n

ot

form

pro

du

cts

bec

ause

th

e C

O m

ole

cule

an

d t

he

NO

2m

ole

cule

did

no

t co

llid

e w

ith

suff

icie

nt

ener

gy.

18.

Whi

ch c

ollis

ion(

s) f

orm

ed a

n ac

tivat

ed c

ompl

ex?

Iden

tify

the

activ

ated

com

plex

.

Co

llisi

on

B; t

he

acti

vate

d c

om

ple

x is

an

OC

ON

O m

ole

cule

.

Co

llisi

on

B; C

O2

and

NO

CO

an

d N

O2

Inco

rrec

t o

rien

tati

on

Reb

ou

nd

Co

rrec

t o

rien

tati

on

Co

llisi

on

Co

llisi

on

Act

ivat

ed c

om

ple

xPr

od

uct

s

Co

rrec

t o

rien

tati

on

Insu

ffic

ien

t en

erg

y

Reb

ou

nd

Co

llisi

on

�A

B

C

bac

Sect

ion

17.1

co

nti

nu

ed

ST

UD

Y G

UID

E F

OR

CO

NT

EN

T M

AST

ER

YCH

AP

TER

17

Nam

eD

ate

Cla

ss

Stu

dy

Gu

ide

for

Co

nte

nt

Mas

tery

Ch

emis

try:

Mat

ter

and

Ch

ang

e •

Ch

apte

r 17

97

Rea

ctio

n R

ates

Rea

ctio

n R

ates

Sect

ion

17.1

A M

odel

for

Rea

ctio

n R

ates

In y

ou

r te

xtb

oo

k, r

ead

ab

ou

t ex

pre

ssin

g r

eact

ion

rat

es a

nd

exp

lain

ing

rea

ctio

ns

and

thei

r ra

tes.

Use

eac

h of

the

ter

ms

belo

w j

ust

once

to

com

plet

e th

e pa

ssag

e.

Acc

ordi

ng to

the

(1)

,ato

ms,

ions

,and

mol

ecul

es m

ust c

ollid

e in

orde

r to

rea

ct. O

nce

form

ed,t

he (

2)

is a

tem

pora

ry,u

nsta

ble

arra

ngem

ent o

f at

oms

that

may

then

for

m p

rodu

cts

or m

ay b

reak

apa

rt to

ref

orm

the

reac

tant

s.

Thi

s ph

ysic

al a

rran

gem

ent i

s kn

own

as th

e (3

). E

very

che

mic

al

reac

tion

requ

ires

ene

rgy,

and

the

min

imum

am

ount

of

ener

gy th

at r

eact

ing

part

icle

s m

ust h

ave

to f

orm

the

activ

ated

com

plex

is th

e (4

). I

n a

chem

ical

rea

ctio

n,th

e

(5)

is th

e ch

ange

in c

once

ntra

tion

of a

rea

ctan

t or

prod

uct p

er u

nit

time.

It m

ay b

e ex

pres

sed

usin

g th

e un

its o

f (6

).

Use

the

ene

rgy

diag

ram

for

the

rea

rran

gem

ent

reac

tion

of

met

hyl i

soni

trile

to

acet

oni-

trile

to

answ

er t

he f

ollo

win

g qu

esti

ons.

7.

Wha

t kin

d of

rea

ctio

n is

rep

rese

nted

by

this

dia

gram

,en

doth

erm

ic o

r ex

othe

rmic

?

exo

ther

mic

8.

Wha

t is

the

chem

ical

str

uctu

re id

entif

ied

at th

e to

p of

the

curv

e on

the

diag

ram

?

the

acti

vate

d c

om

ple

x

9.

Wha

t doe

s th

e sy

mbo

l Ea

repr

esen

t?

the

acti

vati

on

en

erg

y

10.

Wha

t doe

s th

e sy

mbo

l �E

repr

esen

t?

the

net

en

erg

y re

leas

ed f

rom

th

e ex

oth

erm

ic r

eact

ion

mo

l/L �

s

reac

tio

n r

ate

acti

vati

on

en

erg

y

tran

siti

on

sta

te

acti

vate

d c

om

ple

x

colli

sio

n t

heo

ry

ST

UD

Y G

UID

E F

OR

CO

NT

EN

T M

AST

ER

YCH

AP

TER

17

colli

sio

n t

heo

ryac

tiva

ted

co

mp

lex

tran

siti

on

sta

te

acti

vati

on

en

erg

yre

acti

on

rat

em

ol/(

L �s)

Rea

ctio

n P

rog

ress

H3C

�N

�C

H3C

�C

�N

a

Energy

�E

E a

H3C

...C N

Page 2: Study Guide for Content Mastery - Teacher Editionkennedyhigh.org/view/11028.pdf · Chemistry: Matter and Change • For each item in Column A, ... Chapter 17 Study Guide for Content

Cop

yrig

ht ©

Gle

ncoe

/McG

raw

-Hill

,a d

ivis

ion

of th

e M

cGra

w-H

ill C

ompa

nies

,Inc

.

Study Guide for Content Mastery Answer Key Chemistry: Matter and Change T207

Nam

eD

ate

Cla

ss

100

Ch

emis

try:

Mat

ter

and

Ch

ang

e •

Ch

apte

r 17

Stu

dy

Gu

ide

for

Co

nte

nt

Mas

tery

Sect

ion

17.3

Rea

ctio

n R

ate

Law

sIn

yo

ur

text

bo

ok,

rea

d a

bo

ut

reac

tio

n r

ate

law

s an

d d

eter

min

ing

rea

ctio

n o

rder

.

Use

eac

h of

the

ter

ms

belo

w t

o co

mpl

ete

the

stat

emen

ts.

Equ

atio

n 1

aA +

bB

0cC

+ d

D

Equ

atio

n 2

��

k[A

]m[B

]n

1.

Equ

atio

n 1

desc

ribe

s a

.

2.

Equ

atio

n 2

expr

esse

s th

e m

athe

mat

ical

rel

atio

nshi

p be

twee

n th

e ra

te o

f a

chem

ical

reac

tion

and

the

conc

entr

atio

ns o

f th

e re

acta

nts.

Thi

s is

kno

wn

as th

e

.

3.

The

var

iabl

e k

in e

quat

ion

2 is

the

,a n

umer

ical

val

ue th

at

rela

tes

the

reac

tion

rate

and

the

conc

entr

atio

n at

a g

iven

tem

pera

ture

.

4.

The

var

iabl

es m

and

nar

e th

e . T

hese

def

ine

how

the

rate

is

affe

cted

by

the

conc

entr

atio

ns o

f th

e re

acta

nts.

5.

The

squ

are

brac

kets

[ ]

rep

rese

nt

.

6.

The

var

iabl

e t

repr

esen

ts

.

Ans

wer

the

que

stio

ns a

bout

the

fol

low

ing

rate

law

.

Rat

e �

k[A

]1 [B

]2

7.

Wha

t is

the

reac

tion

orde

r w

ith r

espe

ct to

A?

8.

Wha

t is

the

reac

tion

orde

r w

ith r

espe

ct to

B?

9.

Wha

t is

the

over

all r

eact

ion

orde

r fo

r th

e ra

te la

w?

10.

Dou

blin

g th

e co

ncen

trat

ion

of A

will

cau

se th

e ra

te to

dou

ble.

Wha

t wou

ld h

appe

n if

you

doub

led

the

conc

entr

atio

n of

B?

The

rate

wo

uld

qu

adru

ple

. Th

e sq

uar

e o

f 2

is 4

.

11.

A r

eact

ion

rate

can

be

expr

esse

d as

Rat

e �

k[A

]2 . W

hat i

s th

e re

actio

n or

der

for

this

rea

ctio

n?

This

is a

sec

on

d-o

rder

rea

ctio

n.

the

sum

of

1 an

d 2

, or

thir

d o

rder

the

exp

on

ent

to B

, sec

on

d o

rder

the

exp

on

ent

to A

, fir

st o

rder

tim

e

con

cen

trat

ion

reac

tio

n o

rder

s

spec

ific

rat

e co

nte

nt

rate

law

chem

ical

rea

ctio

n

�[A

]�

�t

chem

ical

rea

ctio

nra

te la

wsp

ecif

ic r

ate

con

stan

t

reac

tio

n o

rder

sco

nce

ntr

atio

nti

me

ST

UD

Y G

UID

E F

OR

CO

NT

EN

T M

AST

ER

YCH

AP

TER

17

Nam

eD

ate

Cla

ss

Stu

dy

Gu

ide

for

Co

nte

nt

Mas

tery

Ch

emis

try:

Mat

ter

and

Ch

ang

e •

Ch

apte

r 17

99

Sect

ion

17.2

Fact

ors

Aff

ecti

ng R

eact

ion

Rat

esIn

yo

ur

text

bo

ok,

rea

d a

bo

ut

the

fact

ors

th

at a

ffec

t re

acti

on

rat

es (

reac

tivi

ty, c

on

cen

tra-

tio

n, s

urf

ace,

are

a, t

emp

erat

ure

, an

d c

atal

ysts

).

In t

he s

pace

at

the

left

,wri

te tr

ueif

the

sta

tem

ent

is t

rue;

if t

he s

tate

men

t is

fal

se,

chan

ge t

he it

alic

ized

wor

d to

mak

e it

tru

e.

1.

Dec

reas

ing

the

conc

entr

atio

n of

rea

ctan

ts in

crea

ses

the

colli

sion

freq

uenc

y be

twee

n re

actin

g pa

rtic

les.

2.

A h

eter

ogen

eous

cata

lyst

exi

sts

in a

dif

fere

nt p

hysi

cal s

tate

than

the

reac

tion

it ca

taly

zes.

3.

Incr

easi

ng th

e co

ncen

trat

ion

of a

sub

stan

ce in

crea

ses

the

kine

ticen

ergy

of

the

part

icle

s th

at m

ake

up th

e su

bsta

nce.

4.

Cat

alys

ts in

crea

se th

e ra

tes

of c

hem

ical

rea

ctio

ns b

y ra

isin

gth

eac

tivat

ion

ener

gy o

f th

e re

actio

ns.

5.

Incr

easi

ngth

e su

rfac

e ar

ea o

f a

reac

tant

incr

ease

s th

e ra

te o

f th

ere

actio

n.

6.

Rai

sing

the

tem

pera

ture

of

a re

actio

n in

crea

ses

the

rate

of

the

reac

tion

by in

crea

sing

the

ener

gyof

the

colli

sion

s be

twee

nre

actin

g pa

rtic

les.

Ans

wer

the

fol

low

ing

ques

tion

s.

7.

A c

hem

ist h

eate

d a

sam

ple

of s

teel

woo

l in

a bu

rner

fla

me

expo

sed

to o

xyge

n in

the

air.

He

also

hea

ted

a sa

mpl

e of

ste

el w

ool i

n a

cont

aine

r of

nea

rly

100%

oxy

gen.

The

ste

el-

woo

l sam

ple

in th

e co

ntai

ner

reac

ted

fast

er th

an th

e ot

her

sam

ple.

Exp

lain

why

.

Ther

e w

as a

gre

ater

co

nce

ntr

atio

n o

f o

xyg

en in

th

e co

nta

iner

. In

crea

sin

g t

he

con

cen

trat

ion

of

a re

acta

nt

incr

ease

s th

e ra

te o

f a

reac

tio

n.

8.

Wou

ld th

e ch

emis

t hav

e ob

serv

ed th

e sa

me

resu

lts if

he

used

a b

lock

of

stee

l ins

tead

of

stee

l woo

l? E

xpla

in y

our

answ

er.

No

; a b

lock

of

stee

l wo

uld

rea

ct m

ore

slo

wly

bec

ause

it h

as le

ss s

urf

ace

area

.

9.

How

wou

ld th

e re

actio

n ha

ve d

iffe

red

if th

e st

eel w

ool w

as n

ot h

eate

d?

No

t h

eati

ng

th

e st

eel w

oo

l wo

uld

dec

reas

e th

e ra

te o

f th

e re

acti

on

.

tru

e

tru

e

low

erin

g

tem

per

atu

re

tru

e

Incr

easi

ng

ST

UD

Y G

UID

E F

OR

CO

NT

EN

T M

AST

ER

YCH

AP

TER

17

Page 3: Study Guide for Content Mastery - Teacher Editionkennedyhigh.org/view/11028.pdf · Chemistry: Matter and Change • For each item in Column A, ... Chapter 17 Study Guide for Content

Cop

yrig

ht ©

Gle

ncoe

/McG

raw

-Hill

,a d

ivis

ion

of th

e M

cGra

w-H

ill C

ompa

nies

,Inc

.

T208 Chemistry: Matter and Change Study Guide for Content Mastery Answer Key

Nam

eD

ate

Cla

ss

102

Ch

emis

try:

Mat

ter

and

Ch

ang

e •

Ch

apte

r 17

Stu

dy

Gu

ide

for

Co

nte

nt

Mas

tery

In t

he s

pace

at

the

left

,wri

te tr

ueif

the

sta

tem

ent

is t

rue;

if t

he s

tate

men

t is

fal

se,

chan

ge t

he it

alic

ized

wor

d or

phr

ase

to m

ake

it t

rue.

8.

To d

eter

min

e th

e in

stan

tane

ous

rate

,you

mus

t kno

w th

e sp

ecif

icra

te c

onst

ant,

the

conc

entr

atio

ns o

f th

e re

acta

nts,

and

the

reac

tion

orde

rs f

or th

e re

actio

n.

9.

A r

eact

ion

rate

that

is d

efin

ed a

s k[

A][

B]

and

that

has

a s

peci

fic

rate

con

stan

t of

1.0

�10

1L

/(m

ol�s

),[A

] �

0.1M

,and

[B

] �

0.1M

wou

ld h

ave

an in

stan

tane

ous

rate

of

0.01

mol

/(L�s

).

In y

ou

r te

xtb

oo

k, r

ead

ab

ou

t re

acti

on

mec

han

ism

s.

Ans

wer

the

fol

low

ing

ques

tion

s ab

out

the

prop

osed

rea

ctio

n m

echa

nism

for

the

com

plex

reac

tion

bel

ow.

2NO

(g)

+ 2

H2(

g) 0

N2(

g) +

2H

2O(g

)

Prop

osed

Mec

hani

sm2N

O 0

N2O

2(f

ast)

N2O

2+

H20

N2O

+ H

2O(s

low

)

N2O

+ H

20

N2

+ H

2O(f

ast)

10.

How

man

y el

emen

tary

ste

ps m

ake

up th

e co

mpl

ex r

eact

ion?

thre

e

11.

Wha

t is

the

rate

-det

erm

inin

g st

ep f

or th

is r

eact

ion?

The

slo

w s

tep

is t

he

rate

-det

erm

inin

g s

tep

.

12.

Wha

t are

N2O

2an

d N

2O in

the

reac

tion?

inte

rmed

iate

s

13.

Is th

ere

a ca

taly

st in

volv

ed in

the

reac

tion?

Exp

lain

you

r an

swer

.

Ther

e is

no

cat

alys

t b

ecau

se n

o m

ole

cule

rea

cted

in o

ne

step

an

d t

hen

was

refo

rmed

in a

su

bse

qu

ent

step

.

14.

Wha

t can

you

con

clud

e ab

out t

he a

ctiv

atio

n en

ergy

for

the

rate

-det

erm

inin

g st

ep?

Of

all t

he

step

s, t

he

rate

-det

erm

inin

g s

tep

has

th

e h

igh

est

acti

vati

on

en

erg

y.

15.

If y

ou w

ante

d to

incr

ease

the

rate

of

the

over

all r

eact

ion,

wha

t wou

ld y

ou d

o?

Spee

d u

p t

he

rate

-det

erm

inin

g s

tep

.

0.1

mo

l/(L

�s)

tru

e

ST

UD

Y G

UID

E F

OR

CO

NT

EN

T M

AST

ER

YCH

AP

TER

17

Sect

ion

17.4

co

nti

nu

ed

Nam

eD

ate

Cla

ss

Stu

dy

Gu

ide

for

Co

nte

nt

Mas

tery

Ch

emis

try:

Mat

ter

and

Ch

ang

e •

Ch

apte

r 17

101

Sect

ion

17.4

Inst

anta

neou

s R

eact

ion

Rat

es a

nd R

eact

ion

Mec

hani

sms

In y

ou

r te

xtb

oo

k, r

ead

ab

ou

t in

stan

tan

eou

s re

acti

on

rat

es.

Cir

cle

the

lett

er o

f th

e ch

oice

tha

t be

st c

ompl

etes

the

sta

tem

ent.

1.

is d

eter

min

ed b

y fi

ndin

g th

e sl

ope

of th

e st

raig

ht li

ne ta

ngen

t to

the

curv

e of

apl

ot o

f th

e ch

ange

in c

once

ntra

tion

of a

rea

ctan

t ver

sus

time.

a.

Inst

anta

neou

s ra

tec.

Rea

ctio

n m

echa

nism

b.

Cha

nge

in te

mpe

ratu

red

.R

eact

ion

orde

r

2.

A(n

) co

nsis

ts o

f tw

o or

mor

e el

emen

tary

ste

ps.

a.

com

plex

rea

ctio

nc.

reac

tion

mec

hani

sm

b.

elem

enta

ry s

tep

d.

reac

tion

orde

r

3.

A(n

)is

a s

ubst

ance

pro

duce

d in

an

elem

enta

ry s

tep

and

cons

umed

in a

noth

erel

emen

tary

ste

p.

a.

inst

anta

neou

s ra

tec.

reac

tion

mec

hani

sm

b.

inte

rmed

iate

d.

rate

-det

erm

inin

g st

ep

4.

A(n

) is

the

com

plet

e se

quen

ce o

f el

emen

tary

rea

ctio

ns th

at m

ake

up a

com

plex

reac

tion.

a.

inst

anta

neou

s ra

tec.

reac

tion

mec

hani

sm

b.

elem

enta

ry s

tep

d.

reac

tion

orde

r

5.

The

is

the

slow

est o

f th

e el

emen

tary

ste

ps in

a c

ompl

ex r

eact

ion.

a.

inst

anta

neou

s ra

tec.

rate

-det

erm

inin

g st

ep

b.

inte

rmed

iate

d

.re

actio

n or

der

6.

The

ca

n be

use

d to

det

erm

ine

the

inst

anta

neou

s ra

te f

or a

che

mic

al r

eact

ion.

a.

rate

-det

erm

inin

g st

epc.

prod

ucts

b.

inte

rmed

iate

sd

.ra

te la

w

7.

An

elem

ent o

r co

mpo

und

that

rea

cts

in o

ne s

tep

of a

com

plex

rea

ctio

n an

d re

form

s in

aan

othe

r st

ep o

f th

e co

mpl

ex r

eact

ion

is

a.

an in

term

edia

te.

b.

a ca

taly

st.

c.no

t par

t of

the

reac

tion

mec

hani

sm.

d.

show

n in

the

net c

hem

ical

equ

atio

n fo

r th

e re

actio

n.

ST

UD

Y G

UID

E F

OR

CO

NT

EN

T M

AST

ER

YCH

AP

TER

17