gas stoichiometry
DESCRIPTION
Gas Stoichiometry. Using the Ideal Gas Law In Chemical Reactions. The Automotive Airbag. The airbag is responsible for saving many thousands of lives and represents an important application of Gas Stoichiometry. The Automotive Airbag. The Automotive Airbag. - PowerPoint PPT PresentationTRANSCRIPT
Gas StoichiometryGas Stoichiometry
Using the Ideal Gas LawUsing the Ideal Gas Law
In Chemical Reactions.In Chemical Reactions.
The Automotive AirbagThe Automotive Airbag
TheThe airbag airbag is responsible foris responsible for
saving many thousands of livessaving many thousands of lives
and represents an importantand represents an important
application ofapplication of
Gas StoichiometryGas Stoichiometry..
The Automotive AirbagThe Automotive Airbag
The Automotive AirbagThe Automotive Airbag
The idea of providing protection forThe idea of providing protection for
occupants of vehicles using some typeoccupants of vehicles using some type
of cushioning device is not new.of cushioning device is not new.
The Automotive AirbagThe Automotive Airbag
Today’s modern airbag systemsToday’s modern airbag systems
inflate in millisecondsinflate in milliseconds
and have proven so effectiveand have proven so effective
that they are now requiredthat they are now required
on all cars sold in the USAon all cars sold in the USA
and most other countries.and most other countries.
Most airbag systems useMost airbag systems use technology first developed by technology first developed by Mercedes Benz which Mercedes Benz which
uses auses a
chemical reaction tochemical reaction to
produce a gas that inflates the bag.produce a gas that inflates the bag.
The Automotive AirbagThe Automotive Airbag
Sodium azide (NaNSodium azide (NaN33))
decomposes rapidly intodecomposes rapidly into sodium metal and nitrogen gas. sodium metal and nitrogen gas.
NaNNaN3(s)3(s) Na Na(s)(s) + N + N2(g)2(g)
Sodium azide (NaNSodium azide (NaN33))
decomposes rapidly intodecomposes rapidly into sodium metal and nitrogen gas. sodium metal and nitrogen gas.
2 NaN2 NaN3(s)3(s) 2 Na 2 Na(s)(s) + 3 N + 3 N2(g)2(g)
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP.2 NaN2 NaN3(s)3(s) 2 Na 2 Na(s)(s) + 3 N + 3 N2(g)2(g)
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP.2 NaN2 NaN3(s)3(s) 2 Na 2 Na(s)(s) + 3 N + 3 N2(g)2(g)
? g 60. 0 L? g 60. 0 L
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP.2 NaN2 NaN3(s)3(s) 2 Na 2 Na(s)(s) + 3 N + 3 N2(g)2(g)
? g 60. 0 L? g 60. 0 L
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP.2 NaN2 NaN3(s)3(s) 2 Na 2 Na(s)(s) + 3 N + 3 N2(g)2(g)
? g 60. 0 L? g 60. 0 L
mol Nmol N22
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP.2 NaN2 NaN3(s)3(s) 2 Na 2 Na(s)(s) + 3 N + 3 N2(g)2(g)
? g 60. 0 L? g 60. 0 L
mol Nmol N22
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP.2 NaN2 NaN3(s)3(s) 2 Na 2 Na(s)(s) + 3 N + 3 N2(g)2(g)
? g 60. 0 L? g 60. 0 L
mol NaNmol NaN3 3 mol N mol N22
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP.2 NaN2 NaN3(s)3(s) 2 Na 2 Na(s)(s) + 3 N + 3 N2(g)2(g)
? g 60. 0 L? g 60. 0 L
mol NaNmol NaN3 3 mol N mol N22
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP.
60.0 L N60.0 L N2 2 x ----------- x ----------- x ----------- =x ----------- x ----------- x ----------- =
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP. mol Nmol N2 2 mol NaNmol NaN3 3 g NaNg NaN33
60.0 L N60.0 L N22 x ----------- x ----------- x ---------- =x ----------- x ----------- x ---------- =
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP. mol Nmol N2 2 mol NaNmol NaN3 3 g NaNg NaN33
60.0 L N60.0 L N22 x ----------- x ----------- x ---------- =x ----------- x ----------- x ---------- =
L NL N22 mol N mol N2 2 mol NaNmol NaN33
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP. mol Nmol N2 2 2 mol NaN2 mol NaN3 3 65.065.0 g NaNg NaN33
60.0 L N60.0 L N22 x ----------- x ----------- x ------------- =x ----------- x ----------- x ------------- =
L NL N22 3 mol N 3 mol N2 2 1 mol NaN1 mol NaN33
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP. 11 mol Nmol N2 2 2 mol NaN2 mol NaN3 3 65.065.0 g NaNg NaN33
60.0 L N60.0 L N22 x ----------- x ----------- x ------------- =x ----------- x ----------- x ------------- =
? L N? L N22 3 mol N 3 mol N2 2 1 mol NaN1 mol NaN33
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP. 11 mol Nmol N2 2 2 mol NaN2 mol NaN3 3 65.065.0 g NaNg NaN33
60.0 L N60.0 L N22 x ----------- x ----------- x ------------- =x ----------- x ----------- x ------------- =
22.4 L N22.4 L N22 3 mol N 3 mol N2 2 1 mol NaN1 mol NaN33
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP. 11 mol Nmol N2 2 2 mol NaN2 mol NaN3 3 65.065.0 g NaNg NaN33
60.0 L N60.0 L N22 x ----------- x ----------- x ------------- =x ----------- x ----------- x ------------- =
22.4 L N22.4 L N22 3 mol N 3 mol N2 2 1 mol NaN1 mol NaN33
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP. 11 mol Nmol N2 2 2 mol NaN2 mol NaN3 3 65.065.0 g NaNg NaN33
60.0 60.0 L NL N22 x ----------- x ----------- x ------------- =x ----------- x ----------- x ------------- =
22.4 22.4 L NL N22 3 mol N 3 mol N2 2 1 mol NaN1 mol NaN33
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP. 11 mol Nmol N22 2 mol NaN2 mol NaN3 3 65.065.0 g NaNg NaN33
60.0 60.0 L NL N22 x ----------- x ----------- x ------------- =x ----------- x ----------- x ------------- =
22.4 22.4 L NL N22 3 3 mol Nmol N22 1 mol NaN1 mol NaN33
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP. 11 mol Nmol N22 2 2 mol NaNmol NaN33 65.065.0 g NaNg NaN33
60.0 60.0 L NL N22 x ----------- x ----------- x ------------- =x ----------- x ----------- x ------------- =
22.4 22.4 L NL N22 3 3 mol Nmol N22 1 1 mol NaNmol NaN33
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at STP.at STP. 11 mol Nmol N22 2 2 mol NaNmol NaN33 65.065.0 g NaNg NaN33
60.0 60.0 L NL N22 x ----------- x ----------- x ------------- =x ----------- x ----------- x ------------- =
22.4 22.4 L NL N22 3 3 mol Nmol N22 1 1 mol NaNmol NaN33
116.1 116.1 g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
60.0 L N60.0 L N22 x ----------- x ----------- x -------------- =x ----------- x ----------- x -------------- =
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
mol Nmol N2 2 mol NaNmol NaN3 3 g NaNg NaN33
60.0 L N60.0 L N22 x ----------- x ----------- x -------------- =x ----------- x ----------- x -------------- =
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
mol Nmol N2 2 22 mol NaNmol NaN3 3 65.065.0 g NaNg NaN33
60.0 L N60.0 L N22 x ----------- x ----------- x -------------- =x ----------- x ----------- x -------------- =
L NL N2 2 33 mol Nmol N2 2 1 mol NaN1 mol NaN3 3
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
11 mol Nmol N2 2 22 mol NaNmol NaN3 3 65.065.0 g NaNg NaN33
60.0 L N60.0 L N22 x ----------- x ----------- x -------------- =x ----------- x ----------- x -------------- =
22.4 22.4 L NL N2 2 33 mol Nmol N2 2 1 mol NaN1 mol NaN3 3
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
11 mol Nmol N2 2 22 mol NaNmol NaN3 3 65.065.0 g NaNg NaN33
60.0 L N60.0 L N22 x ----------- x ----------- x -------------- =x ----------- x ----------- x -------------- =
NOT! NOT! L NL N2 2 33 mol Nmol N2 2 1 mol NaN1 mol NaN3 3
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
11 mol Nmol N2 2 22 mol NaNmol NaN3 3 65.065.0 g NaNg NaN33
60.0 L N60.0 L N22 x ----------- x ----------- x -------------- =x ----------- x ----------- x -------------- =
NOT! NOT! L NL N2 2 33 mol Nmol N2 2 1 mol NaN1 mol NaN3 3
((at non-STP conditions)at non-STP conditions)
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
? ? mol Nmol N2 2 22 mol NaNmol NaN3 3 65.065.0 g NaNg NaN33
60.0 L N60.0 L N22 x ----------- x ----------- x -------------- =x ----------- x ----------- x -------------- = in 60.0 L Nin 60.0 L N2 2 33 mol Nmol N2 2 1 mol NaN1 mol NaN3 3
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.PV = nRTPV = nRT
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.PV = nRTPV = nRT
n = ----------------n = ----------------
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.PV = nRTPV = nRT
PVPV
n = ----------------n = ----------------
RTRT
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.PV = nRTPV = nRT
(758 mm)(60.0 L)(758 mm)(60.0 L)
n = -----------------------n = -----------------------
RTRT
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.PV = nRTPV = nRT
(758 mm)(60.0 L)(758 mm)(60.0 L)
n = -----------------------n = -----------------------
R (298 K)R (298 K)
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.PV = nRTPV = nRT
(758 mm)(60.0 L)(758 mm)(60.0 L)
n = -----------------------n = -----------------------
(62.4 (62.4 mm L/molmm L/mol)(298 K))(298 K)
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.PV = nRTPV = nRT
(758 (758 mmmm)(60.0 L))(60.0 L)
n = -----------------------n = -----------------------
(62.4 (62.4 mmmm L/mol K) L/mol K) )(298 K) )(298 K)
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.PV = nRTPV = nRT
(758 (758 mmmm)(60.0 )(60.0 LL))
n = -----------------------n = -----------------------
(62.4 (62.4 mmmm L/L/mol K)mol K) )(298 K) )(298 K)
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.PV = nRTPV = nRT
(758 (758 mmmm)(60.0 )(60.0 LL))
n = -----------------------n = -----------------------
(62.4 (62.4 mmmm L/L/mol mol KK)) )(298 )(298 KK))
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.PV = nRTPV = nRT
n = 2.45 moln = 2.45 mol
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
22 mol NaNmol NaN3 3 65.065.0 g NaNg NaN33
2.45 mol N2.45 mol N22 x ----------- x -------------- = x ----------- x -------------- =
33 mol Nmol N2 2 1 mol NaN1 mol NaN3 3
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
22 mol NaNmol NaN3 3 65.065.0 g NaNg NaN33
2.45 2.45 mol Nmol N22 x ----------- x -------------- = x ----------- x -------------- =
33 mol Nmol N22 1 mol NaN1 mol NaN3 3
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
22 mol NaNmol NaN33 65.065.0 g NaNg NaN33
2.45 2.45 mol Nmol N22 x ----------- x -------------- = x ----------- x -------------- =
33 mol Nmol N22 1 1 mol NaNmol NaN33
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
22 mol NaNmol NaN33 65.065.0 g NaNg NaN33
2.45 2.45 mol Nmol N22 x ----------- x -------------- = x ----------- x -------------- =
33 mol Nmol N22 1 1 mol NaNmol NaN33
106.2 106.2 g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
(758 mm) 2(758 mm) 2 mol NaNmol NaN3 3 65.065.0 g NaNg NaN33
60.0 L N60.0 L N22 x -------------- x ----------- x -------------- = x -------------- x ----------- x -------------- =
(62.4(62.4mm L/mol K) (298K) 3 mol N2 1 mol NaN1 mol NaN3 3
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
(758 mm) 2(758 mm) 2 mol NaNmol NaN3 3 65.065.0 g NaNg NaN33
60.0 60.0 L NL N22 x -------------- x ----------- x -------------- = x -------------- x ----------- x -------------- =
(62.4(62.4mm LL/mol K) (298K) 3 mol N2 1 mol NaN1 mol NaN3 3
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
(758 (758 mmmm) 2) 2 mol NaNmol NaN3 3 65.065.0 g NaNg NaN33
60.0 60.0 LL N N22 x -------------- x ----------- x -------------- = x -------------- x ----------- x -------------- =
(62.4(62.4mmmm LL/mol K) (298K) 3 mol N2 1 mol NaN1 mol NaN3 3
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
(758 (758 mmmm) 2) 2 mol NaNmol NaN3 3 65.065.0 g NaNg NaN33
60.0 60.0 LL N N22 x -------------- x ----------- x -------------- = x -------------- x ----------- x -------------- =
(62.4(62.4mmmm LL/mol KK) (298KK) 3 mol N2 1 mol NaN1 mol NaN3 3
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
(758 (758 mmmm) 2) 2 mol NaNmol NaN3 3 65.065.0 g NaNg NaN33
60.0 60.0 LL N N22 x -------------- x ----------- x -------------- = x -------------- x ----------- x -------------- =
(62.4(62.4mmmm LL/molmol KK) (298KK) 3 molmol N2 1 mol NaN1 mol NaN3 3
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
(758 (758 mmmm) 2) 2 mol NaNmol NaN33 65.065.0 g NaNg NaN33
60.0 60.0 LL N N22 x -------------- x ----------- x -------------- = x -------------- x ----------- x -------------- =
(62.4(62.4mmmm LL/molmol KK) (298KK) 3 molmol N2 1 1 mol NaNmol NaN33
g NaNg NaN33
Detemine the mass of sodium azideDetemine the mass of sodium azideneeded to produce 60.0 L of Nneeded to produce 60.0 L of N22
at 25.0 at 25.0 ooC and 758 mm Hg.C and 758 mm Hg.
(758 (758 mmmm) 2) 2 mol NaNmol NaN33 65.065.0 g NaNg NaN33
60.0 60.0 LL N N22 x -------------- x ----------- x -------------- = x -------------- x ----------- x -------------- =
(62.4(62.4mmmm LL/molmol KK) (298KK) 3 molmol N2 1 1 mol NaNmol NaN33
106.0 106.0 g NaNg NaN33