Collision Theory

Q. ntQ.1. A + B -------> C H = +60 KJ/moln ntEa is 150 KJ. What is the activation energy for a backward reaction?n

Q.

Match the following

$$\begin{array}{ccc}\text{S.No}& \text{Column I}& \text{Column II}\\ a)& a& \text{(i) Activation energy of forward reaction}\\ b)& b& \text{(ii) Change in enthalpy}\\ c)& c& \text{(iii) Activation energy of backward reaction}\\ d)& d& \text{(iv) Potential Energy of Reactants}\\ e)& e& \text{(v) Potential energy of Products}\end{array}$$

1. a – (iv) b – (i) c – (v) d – (ii) e – (iii)

2. a – (v) b – (iv) c – (i) d – (iii) e – (ii)

3. a – (i) b – (iv) c – (v) d – (iii) e – (ii)

4. a – (iv) b – (i) c – (v) d – (iii) e – (ii)

Q.

Complete the following reaction given that electric spark was used to make the two gases react:

$2H_2$ + $O_2$ $\rightleftharpoons$ ___

1. 2$H_2$O(steam)

2. 2$H_2$O(solid)

3. 2$H_2$$O_2$(liquid)

4. 2$H_2$$O_2$(steam)

Q.

Reaction A + B $\to$ C + D + 38 kcal, has activation energy 20 kcal, Activation energy for reaction C + D $\to$ A + B is

1. 20 kcal

2. 58 kcal

3. -20 kcal

4. 18 kcal

Q. The reaction A $\to$ C has activation for the forward and the backward reaction as 25 kJ and 32 kJ respectively. The $\Delta$ H for the reaction is

1. 57 kJ
2. 7 kJ
3. -57 kJ
4. -7 kJ

Q. Give an example of a reaction where the following are involved:
High pressure is required.