For a first order reaction A ⟶ B the rate constant is x min⁻¹. If the initial concentration of A is 0.01M, the concentration of A after one hour is given by the expression.

(a)

001. e^−x

(b)

1 x 10^-2(1-e^-60x)

(c)

(1 x 10^-2)e^-60x

(d)

none of these

A zero order reaction X ⟶ Product, with an initial concentration 0.02M has a half life of 10 min. if one starts with concentration 0.04M, then the half life is

(a)

10 s

(b)

5 min

(c)

20 min

(d)

cannot be predicted using the given information

The addition of a catalyst during a chemical reaction alters which of the following quantities?

(a)

Enthalpy

(b)

Activation energy

(c)

Entropy

(d)

Internal energy

For a reaction, 2A + B ⟶ 3C, The rate of appearance of C at time 't' is 1.2 x 10^-4 mol L^-1s^-1. Identify the rate of reaction.

(a)

4 x 10^-5mol L^-1s^-1

(b)

4.5 x 10^-1mol L^-1s^-1

(c)

3.6 x 10^-4 mol L^-1s^-1

(d)

None of these

For the reaction, 2N₂O₅ ⟶4 NO₂+O₂, select the correct statement.

(a)

Rate of formation of O₂ is same as rate of formation of NO₂

(b)

Rate of disappearance of N₂O₅ is two times the rate of formation of NO₂.

(c)

Rate of formation of O₂ is 0.5 times rate of disappearance of N₂O₅

(d)

Rate of formation of NO₂ is equal to rate of disappearance of N₂O₅

In pseudo-order reactions ______.

(a)

The actual order of reaction is different from that expected using rate law expression

(b)

The concentration of at least one reactant is taken in large excess.

(c)

The concentration of reactant taken in excess may be taken as constant

(d)

All of these

n = 2

(1)

\(k={ Ae }^{ -\left( \frac { Ea }{ RT } \right) }\)

Arrhenius

(2)

0

N₂O_5(g) ⟶ 2NO_2(g) + \(\frac { 1 }{ 2 } \) O_2(g)

(3)

II Order

CH₃COCH₃ + I₂ \(\overset { H }{ \longrightarrow } \) ICH₂ COCH₃ + HI

(4)

1