kingston chme exam

kingston chme exam - Queens University at Kingston Chem 112...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Queen’s University at Kingston Chem 112 MidTerm Exam 20–Mar–2009 Time: 1.5 hours John Carran, Michael Mombourquette, Gang Wu INSTRUCTIONS: You will be given the exam paper and a computer–marked sheet on which you will answer all your questions. You must use a soft–lead pencil (HB or softer). The scanner will not read ink no matter how black a mark it makes. Do not bend or fold the computer sheet in any way or it will become jammed in the scanner. Write and Code your name and student number and on the answer sheets in the appropriate spaces. ( Be especially careful to code in your student number and test form letter properly .) Please leave blank the Test Form spot on the computer sheet. Do not mark the computer answer sheet in any way except to encode the answers. Stray marks can be read by the machine as incorrect answers! Make sure you’ve coded in all the answers. No marks are deducted for wrong answers so DO NOT LEAVE BLANKS! There is exactly one answer for each multiple-choice question. All Multiple Choice questions are worth 1 mark. There are 27 Questions in total. You are allowed to use any basic, non-programming, non-communications-able calculator. PLEASE NOTE: “Proctors are unable to respond to queries about the interpretation of exam questions. Do your best to answer exam questions as written.” Good luck
Background image of page 1

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

View Full DocumentRight Arrow Icon
1) For which of the following reactions does K p = K c ? A) 2 SO 2 (g) + O 2 (g) 2SO 3 (g) B) H 2 (g) + I 2 (s) 2HI(g) C) 3Fe(s) + 4 H 2 O(g) Fe 3 O 4 (s) + 4H 2 (g) D) C(s) + H 2 O(g) CO(g) + H 2 (g) 2) 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) A) K c = 2.2 × 10 - 14 B) K c = 1.9 × 10 - 15 C) K c = 1.1 × 10 - 12 D) K c = 9.4 × 10 - 14 E) K c = 4.6 × 10 - 14 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? A) more H 2 O(g) will be formed B) K c = 4.66 C) more products are formed D) Since K c does not change, nothing happens. 4) Which factor influences the value of the equilibrium constant for a reversible reaction? A) removing product B) removing reactant C) raising the temperature D) addition of a catalyst E) all of these 5) For the reaction: 3 Fe(s) + 4 H 2 O(g) Fe 3 O 4 (s) + 4 H 2 (g) what is the effect of removing H 2 ? A) The K p is decreased. B) There is no change.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/20/2011 for the course CHEM 120 taught by Professor Barret during the Fall '08 term at McGill.

Page1 / 8

kingston chme exam - Queens University at Kingston Chem 112...

This preview shows document pages 1 - 3. Sign up to view the full document.

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