final exam review units 8-10

Final Exam ReviewUnits 8-1045 Questions in 80 minutes 1:45 per question15 Questions = 33 points26:33 timer

Station 1 (Heat Unit 8)•Which of the following is an endothermic

phase change?

a) Sublimationb) Freezingc) Condensationd) None of these

Station 1 (Heat Unit 8)•Which of the following is an endothermic

phase change?

a) Sublimationb) Freezingc) Condensationd) None of these

Station 2 (Heat Unit 8)•How much heat does a 3.0 gram ice cube

absorb as its temperature increases from -7.4C to 5.0C?

a) 46.62 Jb) 1001 Jc) 1110.42 Jd) 155.5 J

Station 2 (Heat Unit 8)•How much heat does a 3.0 gram ice cube

absorb as its temperature increases from -7.4C to 5.0C?

a) 46.62 Jb) 1001 Jc) 1110.42 Jd) 155.5 J

Station 3 (Heat Unit 8)•How much heat is released when 4.1

grams of water is frozen?

a) 1.4 kJb) 25 kJc) 170 kJd) 9.3 kJ

Station 3 (Heat Unit 8)•How much heat is released when 4.1

grams of water is frozen?

a) 1.4 kJb) 25 kJc) 170 kJd) 9.3 kJ

Station 4 (Heat Unit 8)•Classify the condensation of steam as a

chemical change or a physical change.

a) Chemical changeb) Physical change

Station 4 (Heat Unit 8)•Classify the condensation of steam as a

chemical change or a physical change.

a) Chemical changeb) Physical change

Station 5 (Heat Unit 8) •If 3.0g of water at 35C is mixed with 8g

of ethanol at 9C, what is the final temp of the mixture?

a) 19.2Cb) 39.4Cc) 10.4Cd) 42.0Ce) None of these

Station 5 (Heat Unit 8) •If 3.0g of water at 35C is mixed with 8g

of ethanol at 9C, what is the final temp of the mixture?

a) 19.2Cb) 39.4Cc) 10.4Cd) 42.0Ce) None of these

Station 6 (Solutions Unit 9)•Which of the following would NOT

increase the rate of solvation?

a) Increase surface areab) Agitate the mixture by stirringc) Increase the temperature of the solventd) All of these will increase the rate.e) A and B

Station 6 (Solutions Unit 9)•Which of the following would NOT

increase the rate of solvation?

a) Increase surface areab) Agitate the mixture by stirringc) Increase the temperature of the solventd) All of these will increase the rate.e) A and B

Station 7 (Solutions Unit 9)•Use the solubility graph on your reference

sheet. If 70 grams of O2 is dissolved in water at room temperature (24C), will the solution be saturated, supersaturated, or unsaturated?a) Saturatedb) Supersaturatedc) Unsaturatedd) Cannot tell based on the information

given.

Station 7 (Solutions Unit 9)•Use the solubility graph on your reference

sheet. If 70 grams of O2 is dissolved in water at room temperature (24C), will the solution be saturated, supersaturated, or unsaturated?a) Saturatedb) Supersaturatedc) Unsaturatedd) Cannot tell based on the information

given.

Station 8 (Solutions Unit 9)•Which of the following aqueous solutions

will give the highest freezing point? a) 1m KIb) 1m CaF2

c) 1mAlPO4

d) 1m Mg3(PO4)2

e) All of these solutions will have the same freezing point.

Station 8 (Solutions Unit 9)•Which of the following aqueous solutions

will give the highest freezing point? a) 1m KIb) 1m CaF2

c) 1mAlPO4

d) 1m Mg3(PO4)2

e) All of these solutions will have the same freezing point.

Station 9 (Solutions Unit 9)•A solution is 14.2 M NaOH and is diluted.

What is the concentration if 10mL of the concentrated solution is diluted to 630mL?

a) 0.225 Mb) 14.4 Mc) 895 Md) 0.895 Me) 14.0 M

Station 9 (Solutions Unit 9)•A solution is 14.2 M NaOH and is diluted.

What is the concentration if 10mL of the concentrated solution is diluted to 630mL?

a) 0.225 Mb) 14.4 Mc) 895 Md) 0.895 Me) 14.0 M

Station 10 (Solutions Unit 9)•How many grams of lithium chloride

would you need to add to 25g water to make 0.80 molal solution?

a) 0.02 grams of LiClb) 0.2 grams of LiClc) 20 grams of LiCld) 0.848 grams of LiCle) 0.00048 grams of LiCl

Station 10 (Solutions Unit 9)•How many grams of lithium chloride

would you need to add to 25g water to make 0.80 molal solution?

a) 0.02 grams of LiClb) 0.2 grams of LiClc) 20 grams of LiCld) 0.848 grams of LiCle) 0.00048 grams of LiCl

Station 11 (Solutions Unit 9)•What is the volume of solution if the

molarity is 0.45M and 0.15 moles of solute are dissolved?

a) 0.33 L of solutionb) 0.33 mL of solutionc) 3.00 L of solutiond) 3.00 mL of solutione) None of these

Station 11 (Solutions Unit 9)•What is the volume of solution if the

molarity is 0.45M and 0.15 moles of solute are dissolved?

a) 0.33 L of solutionb) 0.33 mL of solutionc) 3.00 L of solutiond) 3.00 mL of solutione) None of these

Station 12 (Acid/Base Unit 10)•According to the Arrhenius theory a

substance that releases a hydrogen ion is classified as a(n)

a) Acidb) Basec) Conjugate Acidd) Conjugate Basee) None of these

Station 12 (Acid/Base Unit 10)•According to the Arrhenius theory a

substance that releases a hydrogen ion is classified as a(n)

a) Acidb) Basec) Conjugate Acidd) Conjugate Basee) None of these

Station 13 (Acid/Base Unit 10)•Consider the reaction:

NH3(aq) + H2O(l) NH4+(aq) + OH-(aq)

What species is the conjugate acid?a) NH3

b) H2Oc) NH4

+

d) OH-

e) None of these

Station 13 (Acid/Base Unit 10)•Consider the reaction:

NH3(aq) + H2O(l) NH4+(aq) + OH-(aq)

What species is the conjugate acid?a) NH3

b) H2Oc) NH4

+

d) OH-

e) None of these

Station 14 (Acid/Base Unit 10)•Calculate the [H+] in a solution that has a

pOH of 13.4.

a) 3.98x10-14 Mb) 2.51x10-1 Mc) 3.98 Md) 2.51x1013 Me) None of these

Station 14 (Acid/Base Unit 10)•Calculate the [H+] in a solution that has a

pOH of 13.4.

a) 3.98x10-14 Mb) 2.51x10-1 Mc) 3.98 Md) 2.51x1013 Me) None of these

Station 15 (Acid/Base Unit 10)•A solution with a hydrogen ion

concentration of 4.6x10-8 M has a pH between

a) 6.67b) 7.34c) -7.34d) 13.3e) None of these

Station 15 (Acid/Base Unit 10)•A solution with a hydrogen ion

concentration of 4.6x10-8 M has a pH between

a) 6.67b) 7.34c) -7.34d) 13.3e) None of these