MCQs of Chemical Kinetics

Showing 201 to 210 out of 228 Questions

201.

What is explained by the theory of collision ?

(a)	Only order of reaction
(b)	Reaction rate
(c)	Equilibrium state of the reaction
(d)	Order of reaction and molecularity of the reaction

202.

For endothermic reaction, _____ .

(a)	E_a < E'_a
(b)	E_a = E'_a
(c)	There is no relation between E_a and E'_a
(d)	E_a > E'_a

203.

Reaction

3 {ClO}^{-} \to {ClO}_{3}^{-} + 2 {Cl}^{-}

occurs in following two steps.

$(i) {ClO}^{-} + {ClO}^{-} \overset{K_{1}}{\to} {ClO}_{2}^{-} + {Cl}^{-} (Slow step)$

$(i) {ClO}_{2}^{-} + {ClO}^{-} \overset{K_{2}}{\to} {ClO}_{3}^{-} + {Cl}^{-} (Fast step)$

Then the rate of given reaction = _____ .

204.

For the reaction

A + B \to products

$- \frac{d [A]}{d t} = X \cdot e^{\frac{- E_{a}}{R T}}$ , what is X ?

205.

If plot of

\log K \to \frac{1}{T}

gives straight line. What is the value of the slope ?

206.

For a reaction the value of the slope of a plot in

\ln K \to \frac{1}{T}

= _____ .

207.

By using suitable catalyst in reaction _____ .

(a)	reaction rate increases
(b)	equilibrium constant increases
(c)	activation energy increases
(d)	None of the three

208.

The formula of half life period (

t_{\frac{1}{2}}

) for first order reaction s _____ .

209.

Esterification is reaction of which order ?

210.

Activation energy means _____ .

(a)	enthalpy change in forward reaction
(b)	potential energy of reactant
(c)	enthalpy change in reverse reaction
(d)	potential energy of product

Showing 201 to 210 out of 228 Questions