review2 - Exam Name_ MULTIPLE CHOICE. Choose the one...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) For the following chemical equilibrium, K p = 4.6 × 10 - 14 at 25 °C, find the value of K c for this reaction at 25 °C. 2 Cl 2 (g) + 2 H 2 O(g) 4 HCl(g) + O 2 (g) 1) _______ A) K c = 9.4 × 10 - 14 B) K c = 2.2 × 10 - 14 C) K c = 1.1 × 10 - 12 D) K c = 1.9 × 10 - 15 E) K c = 4.6 × 10 - 14 2) For the reaction 2 SO 2 (g) + O 2 (g) 2 SO 3 (g), K c = 2.8 10 2 at 1000 K. If a vessel is filled with these gases such that the initial concentrations are [SO 2 ] = 0.025, [O 2 ] = 0.035, and [SO 3 ] = 0.046, in which direction will a reaction occur and why? 2) _______ A) toward reactants because Q = 2.8 × 10 3 B) it is at equilibrium C) toward products because Q = 96 D) toward reactants because Q = 0.019 E) toward products because Q = 53 3) Consider the following reaction. C(s) + H 2 O(g) CO(g) + H 2 (g) At equilibrium at a certain temperature, [H 2 O(g)] = 0.12 M, and [CO(g)] = [H 2 (g)] = 1.2 M. If suddenly these concentrations are increased by 0.50 M, which of the following is true? 3) _______ A) more products are formed B) Since K c does not change, nothing happens. C) more H 2 O(g) will be formed D) K c = 4.66 4) In a reaction at equilibrium involving only gases, a change in pressure of the reaction mixture shifts the position of equilibrium only when: 4) _______ A) the gases are impure B) the reaction is exothermic as written C) heat is absorbed by the reaction proceeding to the right D) the collision rate increases E) the moles of gas are not equal on the two sides of the equation. 5) Choose the correct statement about the equilibrium:
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

review2 - Exam Name_ MULTIPLE CHOICE. Choose the one...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online