Question 1
For the reaction: H
2(g) + I
2(g)
2 HI(g),
Kc = 92.0
When equilibrium concentrations of HI and I
2 are [HI] = 0.115 M and [I
2] = 0.250 M, the equilibrium concentration of [H
2] is:
◦ 5.00 × 10
-3 M
◦ 5.75 × 10
-4 M
◦ 1.74 × 10
3 M
◦ 0.135 M
◦ 9.56 M
Question 2
For the reaction: N
2(g) + 2 O
2(g)
2 NO
2(g),
Kc = 8.3 × 10
-10 M
-1 at 25 °C. What is the concentration of N
2 gas at equilibrium when the concentration of NO
2 is five times the concentration of O
2 gas?
◦ 3.3 × 10
-11 mol L
-1◦ 1.7 × 10
-10 mol L
-1◦ 6.0 × 10
9 mol L
-1◦ 3.0 × 10
10 mol L
-1