Test Form 3

# Test Form 3 -...

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

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ Bonus Final Exam 3 ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ 1 Consider the following equilibrium, for which K p ¡ 1.49 ¡ 10 8 at 373 K CO ¡ g ¢ Cl 2 ¡ g ­ COCl 2 ¡ g In an equilibrium mixture of the three gages, P CO ¡ P Cl2 ¡ 8.60 ¡ 10 " 4 atm. The partial pressure of the product COCl 2 is atm. ( A ) 1.28 ¡ 10 5 atm ( B ) 1.10 ¡ 10 2 atm ( C ) 1.72 ¡ 10 11 atm ( D ) 4.96 ¡ 10 " 15 atm ( E ) 2.01 ¡ 10 14 atm 2 For a process to be spontaneous it MUST be true that... ( A ) the Gibbs free energy of the system decreases and S univ increases. ( B ) heat is transferred from the system to the surroundings. ( C ) the entropy change of the system is positive. ( D ) both the enthalpy and the entropy of the system decrease. ( E ) the entropy change of the system is zero. 3 What is the P H of a solution made by dissolving 15.1 g of acetic acid, HC 2 H 3 O 2 , in enough water to make 100 mL of solution? The K a of HC 2 H 3 O 2 is 1.8 ¡ 10 " 5 . ( A ) P H ¡ 0.61 ( B ) P H ¡ 4.72 ( C ) P H ¡ 2.17 ( D ) P H ¡ 2.71 ( E ) P H ¡ 3.70 4 Calculate the P H of a 2.16 M solution of NaF. The K a for HF is 6.8 ¡ 10 " 4 . ( A ) P H ¡ 10.83 ( B ) P H ¡ 0.33 ( C ) P H ¡ 2.16 ( D ) P H ¡ 8.75 ( E ) P H ¡ 5.24 5 The overall cell reaction for the ELECTROLYSIS shown below is: Cd 2 ¢ ¡ aq ¢ Cu ¡ s v Cd ¡ g ¢ Cu 2 ¢ ¡ aq Which of the following statements is FALSE ? ( A ) Electrons flow from the copper electrode to the cadmium electrode. ( B ) The copper electrode is the anode and the cadmium electrode is the cathode. ( C ) Cations migrate from the salt bridge into the 1.0 M Cu 2 ¢ solution. ( D ) The mass of the Cd ¡ s electrode will increase during the electrolysis. ( E ) The mass of the Cu ¡ s electrode will decrease during the electrolysis. 6 A mixture consisting of 100g of solid sodium hydroxide, 100g of solid sodium hydrogen carbonate, and 2.5 atm of carbon dioxide is placed into a sealed 1.00-L steel reaction vessel. This mixture is heated to 700 K and allowed to come to equilibrium according to the following reaction: NaOH ¡ s ¢ CO 2 ¡ g ­ NaHCO 3 ¡ s ; K p ¡ 2.5 What is the equilibrium partial pressure of carbon dioxide? ( A ) 1.9 ¡ 10 " 1 atm ( B ) 2.5 atm ( C ) 4.0 ¡ 10 " 1 atm ( D ) 3.0 ¡ 10 " 1 atm ( E ) 3.7 atm 7 The decomposition of CH 3 N 2 CH 3 , shown below, is a first-order reaction with a half life of 32.1 min at 327 ( C. Initially the concentration of CH 3 N 2 CH 3 is 8.92 ¡ 10 " 2 M. What is the concentration after 26.1 min?...
View Full Document

## This note was uploaded on 05/12/2011 for the course BIOL 1202 taught by Professor Gregg during the Spring '08 term at LSU.

### Page1 / 11

Test Form 3 -...

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

View Full Document
Ask a homework question - tutors are online