Part I 1. A system that does not exchange matter or energy with its surroundings is called as: a) adiabatic c) isothermal 2. b) isolated d) isostatic...

Part I

1. A system that does not exchange matter or energy with its surroundings is called as:

a) adiabatic b) isolated

c) isothermal d) isostatic

1. Which energy difference in the energy profile below corresponds to the activation energy for

the reverse reaction

1. x b) y

c) x + y d) x - y

1. Consider the following reaction: 2 A B

The rate constants for the forward and reverse reactions for the above reaction were found to be

kf = 2.58 × 1013 s-1 and kr = 5.36 × 10-4 s-1 respectively at 1000 K.

What is the equilibrium constant for the following reaction: 2 B 4 A

1. 2.07 x10 −17 b) 9.63 x10 5

c) 4.81 x10 16 d) 4.32 x10 −34

1. Consider the following reaction :

CuO(s) + CH4(g) CO2(g) + 4Cu(s) + 2H2O(g) Kp = 1.7 at 200 K

A reaction mixture contains 2 atm CH4, 0.5 atm CO2 and 0.8 atm H2O at 200 K

Which of the following statements is TRUE concerning the system

1. The reaction will shift in the direction of the products

2. The equilibrium constant will increase with time

3. The reaction will shift towards the reactant side

4. The system is at equilibrium

1. Which of the following compounds when dissolved in pure water will produce the highest concentration of [H+]

a) 0.1 M NaOH b) 0.1 M KCl

c) 0.1 M HF d) 0.1 M HBr

1. Which of the following compounds when dissolved in water will make the solution acidic

1. NaF b) NH4Cl

c) KCl d) LiI

Part II

1. Define the following in words

1. Irreversible reaction

1. Activation energy

1. Buffer solution

1. Weak acid

1. Mark the following statements as TRUE or FALSE

1. Enthalpy is a state function -----------------

1. Rate constant does not depend upon temperature -------------

1. The pOH of pure water at 250C is 7 ----------------

1. A reaction at equilibrium has a Keq value = 0 ---------------