Untitled - Kelly Walsh High School

218 CHEMISTRY FOR THE UTTERLY CONFUSED
ANSWER KEY
1. pressure or concentration 2. products 3. left 4. false 5. false
6. true 7. true 8. false
9. a. Kc b. Kc
c. Kc
e. Kc [Zn
d. Kc
2+ 2 ] [CO3 ]
P P N2
10. a. Kp
PCO PH2 b. Kp
2 2 [Cu(NH3 ) 4 ]
[Cu
O2 2 ] [NH3 ] 4
[H [CO2 ]
] [NO2 ]
[HNO2 ]
3
[CO] 3
[CO2 ][H2O] 2
[CH4 ][O2 ] 2
P 2 NO 2
P 8 CO 2
P H2 O
c. Kp
e. Kp
d. Kp
11. Kp 1.58 108 1.25 103 12.
Initial
NO
0.250 M
H2 0.100 M
N2 0
H2O 0.200 M
Change 2 x 2 x x 2x
Equilibrium 0.250 2 x 0.100 2 x x 0.200 2x
13.
Initial
S2 0.431 atm
C
—
CS2 0
Change x — +x
Equilibrium 0.431 x — +x
14. a. decrease b. no change c. no change d. decrease e. decrease
15. Kc 0.154
16. Kp 1.60 1.26 atm
17. Kc 9.1 108 [H2] 1.9 103 M, [S2] 9.7 104 [H2 ]
M, and [H2S] 0.200 M
2 [S2 ]
[H2S] 2
[0.01375] [3 (0.01375)]
P P PH3 BCl3
P P PH3 BCl3
3
[0.0300 2 (0.01375)] 2
[C2H2 ][H2 ] 3
[CH4 ] 2
PCO2 P
(3 0)
0.0821 L atm
B a b (523 K)R
mol K 2 C4H P
10
13
1
PO2 O2