JEE CHEMISTRY MCQ: CHEMICAL KINETICS

1 Medium

1 of 1

Analyzing +4 | -1

Assertion (A):The acid hydrolysis of ester takes place more rapidly in

\mathrm{D}_2 \mathrm{O}

than

\mathrm{H}_2 \mathrm{O}

Reason (R):

\mathrm{D}_3 \mathrm{O}^{+}

is stronger acid than

\mathrm{H}_3 \mathrm{O}^{+}

\mathrm{H}_2 \mathrm{D}^{+} \mathrm{O}

View answer and explanation

Correct option: C

Both A and R are correct and R is correct explanation of A

Option C is correct because both the assertion and reason are correct, and the reason correctly explains the assertion. D

_3

^+

is a stronger acid than H

_3

^+

, leading to faster acid hydrolysis in D

_2

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\mathrm{A}_2+\mathrm{B}_2 \rightarrow 2 \mathrm{AB}

\begin{aligned} & {{\text{A}}_2}\mathop \rightleftharpoons \limits_{{{\text{k}}_{ - 1}}}^{{{\text{k}}_1}} {\text{A}} + {\text{A (fast) }} \\ & \mathrm{A}+\mathrm{B}_2 \xrightarrow{\mathrm{k}_2} \mathrm{AB}+\mathrm{B} \text { (slow) } \\ & \mathrm{A}+\mathrm{B} \rightarrow \mathrm{AB} \text { (fast) } \end{aligned}

k

(Initial\mathrm{ }conc.\mathrm{ } = a)

C_0 \sqrt{T}

C_0

T

100 \mathrm{~kJ/mol}.

75 \%

\log _{10} \frac{K_2}{K_1}

27^{\circ} \mathrm{C}

2.303 \times 8.314=19.147