Fto.io 4oI - Ms. Popov · 2018-11-07 · keg 3.072 Fto.io 4oI (2) 4.00 mol of SO3 is introduced...
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Chemistry 12 Equilibrium IV Name: Date: Block: 1. ICE Tables ICE Tables Example: (1) A 2.0 L bulb contains 6.00 mol of NO2, 3.0 mol of NO and 0.20 mol of O2 at equilibrium. What is the Keq for this reaction? 2 NO (g) +O2 (g) ⇋ 2 NO2 (g) • Determine the Keq expression: • Calculate the concentration of each species: • Substitute into the Keq expression: Keg CN0z Cnostod CNET 6z zol 3.0M 027 022 401 0.10 M No 3 Omo I 1.5 M keg 3.072 Fto.io 4oI
Transcript of Fto.io 4oI - Ms. Popov · 2018-11-07 · keg 3.072 Fto.io 4oI (2) 4.00 mol of SO3 is introduced...
Chemistry12EquilibriumIV
Name:Date:Block:
1. ICETables
ICETablesExample:(1)A2.0Lbulbcontains6.00molofNO2,3.0molofNOand0.20molofO2atequilibrium.WhatistheKeqforthisreaction?
2NO(g)+O2(g)⇋2NO2(g)
• DeterminetheKeqexpression:
• Calculatetheconcentrationofeachspecies:
• SubstituteintotheKeqexpression:
Keg CN0z
Cnostod
CNET 6z zol 3.0M 027 022 401 0.10M
No 3 OmoI 1.5 M
keg 3.072
Fto.io 4oI
(2)4.00molofSO3isintroducedintoa2.00Lbulb.After5minutes,equilibriumisestablishedandisfoundthat0.500molofO2exists.WhatistheKeqvalue?
_____SO2(g)+_____O2(g)⇋_____SO3(g)
• Thesystemwasatequilibrium–thenastresswasintroduced.Whatisthisstress?
• Theadditionofproductmeansthattheequilibriumwillshift________________formingmore_________________anddecreasingconcentrationofthe_________________.
• Allchangesinconcentrationmustobeystoichiometricproportions. _____SO2(g) + _____O2(g) ⇋ _____SO3(g)
OriginalEquilibrium
Initial(Wherethestressisintroduced)
Change(Howthesystemrespondstothe
stress)
Equilibrium(Newequil’mconcentrations)
• Keqiscalculatedusingthenewequilibriumconcentrations:
2 72450379
leftreactants product
cozy 0M
Oz
soEg'mreestablished
WIL change shiftorig int alEglin Strinstroduced
2 I 2
OM OM OM
OM eM spike
10.500M 10.250M 0.502M0.500M 0.250M 1.50M
keg 0055 4.5022 136.07God cop 0500740.250T
(3)A1.00Lreactionvesselcontains0.750molofCOand0.275molofH2Oonly.After1hour,equilibriumisreachedaccordingto:
_____CO(g)+_____H2O(g)⇋_____CO2(g)+_____H2(g).Analysisshows0.250molofCO2ispresentatequilibrium.WhatistheKeq?
_____CO(g) + _____H2O(g) ⇋ _____CO2(g) + _____H2(g)Original
Equilibrium
Initial
Change
Equilibrium
(4)Astudentplaced7.00molNH3ina0.500Lflask.Atequilibrium,6.2MN2wasfoundintheflask.Whatistheequilibriumconstantforthisreaction?
_____NH3(g)⇋_____N2(g)+_____H2(g)
I l I I
OM OM OM OM
M o
M Mgm0.250 0.2 50 0.250M 0.250
6.500M o M 0.250M 0.250M
tea
2 I 3
mE 1.6M
ke9ttffj.CN Cl8g g 15584416001
1.6 104
DeterminingEquilibriumConcentrationsfromKeqandtheInitialConcentrations(1)Thefollowinggasesareinjectedintoa1.00Lflask:1.20molofH2and1.20molofF2.WhatwilltheconcentrationofHFbewhenequilibriumisachieved?
_____H2(g)+_____F2(g)⇋_____HF(g) Keq=2.50
H2(g) + F2(g) ⇋ HF(g)Initial
Change
Equilibrium
(2)4.00molH2and4.00molC2N2areinjectedintoa2.00Lflaskwheretheyestablishequilibrium.Whatisthe[C2N2]whenequilibriumisachieved?
_____H2(g)+_____C2N2(g)⇋_____HCN(g) Keq=5.00
I l I ZI I 2I 20 M 1.20M OM
Mr x x 2x1.20 X 1.20 X 2X
1.58 22 L1.20 x CHF Zx
keg CHFI c F8 2x 20.531
CHICET 1.90 I.s8 z 41.067a
90 3.58xFg X 0.531
200 X 2.00 X 2x
CzNz 2.00 x
Ceq CHCNI233 2.00 1.06
CHICGND 40.941706
(3)A3.00Lflaskcontains6.00MH2,6.00MCl2and3.00MHClatequilibrium.Anadditional15.0molofHClisinjectedintotheflask.Whatisthe[Cl2]whenequilibriumisre-established?Whatisthebalancedequation?WhatisKeq?
H2(g) + Cl2(g) ⇋ HCl(g)Original
Equilibrium
Initial
Change
Equilibrium
tostressHatch 2 HCl is.omol
keg HccE.com
THAT0.250
6.00 6.00
qq.gefI change
Cl oftenestablished
Gta 1LstressfeY actress 2 f6.00M 6.00M 3.00Mt oom
6.00M 6.00M 8.00Mmr t t X 2x
6.00T X 6 8,00 2x
6 he4122 6 tx
6.00T X 6.00 2.000.500 8.00 4 48.00mLToots0.50560 7 7 8.00 2x3.001 0.500 8.00 2x
Z x s
X
(4)Thetablebelowshowsthemolarityofthreegasesatequilibrium.TheconcentrationofHFisthendecreasedasshown.Whatisthe[HF]whenequilibriumisre-established?Keq=
H2(g) + F2(g) ⇋ HF(g)Original
Equilibrium 6.00 6.00 12.0Initial
6.00 6.00 5.00Change
Equilibrium
HebdenWorkbook:Pg.70#47-49,53,55,60
500 500
CHF 2
Ejc oE4
2stressremoval
X zofHF
6 OO X 6.00 X 5OO
f4TO5O0tXX12 O 2 OOx 5 OOt2X7.0 4.00
2.00 5.0 4.006.00 X 4.00 CHF 5.00 211.75
6 IO L.OO 5OOtxJ 1.75 8.50Md
C 18.5mL
