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Homework 3

# Homework 3 - alexander(jra2623 Homework 3 sutclie(51045...

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alexander (jra2623) – Homework 3 – sutcliffe – (51045) 1 This print-out should have 18 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. NOTE: Even if you are not asked to, WRITE the expression for the equilibrium constant and/or reaction quotient to see what concentration /partial pressure values you need. There are some equilibrium calcula- tions which may need the quadratic formula. This HW covers Chapter 6 up to Le Chatal- ier’s Principle. 001 10.0points What is the equilibrium expression for the following equation? Assume that all species here are gases. A + 3 B 2 C + D 1. 2 [C] [D] 3 [A] [B] 2. [C] 2 [D] [A] [B] 3 3. [A] [B] 3 [C] 2 [D] 4. 3 [A] [B] 2 [C] [D] 002 10.0points What is the form of the equilibrium constant for the process PbO(s) + CO 2 (g) PbCO 3 (s) ? P species means the pressure of species. 1. K p = [PbCO 3 ] [PbO] P CO 2 2. K p = P PbCO 3 P CO 2 3. No other choice is correct. 4. K c = [PbCO 3 ] 2 [CO 2 ] [PbO] 5. K p = 1 P CO 2 003 10.0points Consider the following reactions at 25 C: reaction K c 2 NO(g) N 2 (g) + O 2 (g) 1 × 10 30 2 H 2 O(g) 2 H 2 (g) + O 2 (g) 5 × 10 82 2 CO(g) + O 2 (g) 2 CO 2 (g) 3 × 10 91 Which compound is most likely to dissociate and give O 2 (g) at 25 C? 1. H 2 O 2. CO 2 3. CO 4. NO 004 10.0points The equilibrium constant for the reaction 4 NH 3 (g) + 5 O 2 (g) 4 NO(g) + 6 H 2 O(g) is K . Calculate the equilibrium constant for the reaction 2 NO(g) + 3 H 2 O(g) 2 NH 3 (g) + 5 2 O 2 (g) .

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Homework 3 - alexander(jra2623 Homework 3 sutclie(51045...

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