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
A system that does not exchange matter or energy with its surroundings is called as:
a) adiabatic b) isolated
c) isothermal d) isostatic
Which energy difference in the energy profile below corresponds to the activation energy for
the reverse reaction
x b) y
c) x + y d) x - y
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
2.07 x10 −17 b) 9.63 x10 5
c) 4.81 x10 16 d) 4.32 x10 −34
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
The reaction will shift in the direction of the products
The equilibrium constant will increase with time
The reaction will shift towards the reactant side
The system is at equilibrium
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
Which of the following compounds when dissolved in water will make the solution acidic
NaF b) NH4Cl
c) KCl d) LiI
Part II
Define the following in words
Irreversible reaction
Activation energy
Buffer solution
Weak acid
Mark the following statements as TRUE or FALSE
Enthalpy is a state function -----------------
Rate constant does not depend upon temperature -------------
The pOH of pure water at 250C is 7 ----------------
A reaction at equilibrium has a Keq value = 0 ---------------