Question

Consider the following statement:-

(i) Increase in concentration of reactant increases the rate of a zero-order reaction.

(ii) Rate constant k is equal to collision frequency A if E_a = 0

(iii) Rate constant k is equal to collision frequency A if E_a = 0

(iv) In k vs t is a straight line

(v) In k vs 1/T is a straight line

Which of the above statement is correct?

Options

• (i) and (iv)

• (ii) and (iv)

• (iii) and (iv)

• (ii) and (iii)

• (i) and (v)

Answer 1

(ii) and (iv)

Explanation:

(i) The increase has no effect on the mention rate for zero-order reactions.

(ii) According to Arrhenius eqn

K = `Ae^((- E_a)/(RT))`

When E_a = 0; K < A

(iii) When E_a = `oo`, L < A

(iv) The relationship between k and t is not a straight line.

(v) In K vs `1/t` is a straight line with slope `("Ca")/("RB")`.