Which of the following is an example of a pse | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) In a chemical reaction,if one of the reactants is present in large excess,the reaction follows first-order kinetics even if the molecularity is hi

Vedclass · Accepted Answer

$CH_3COOCH_3 + H_2O \xrightarrow{H^{+}} CH_3COOH + CH_3OH$

Vedclass · Answer

(A) In a chemical reaction,if one of the reactants is present in large excess,the reaction follows first-order kinetics even if the molecularity is higher. This is known as a pseudo unimolecular reaction.The acid-catalyzed hydrolysis of methyl acetate is a classic example:$CH_3COOCH_3 + H_2O \xrightarrow{H^{+}} CH_3COOH + CH_3OH$Here,water is present in large excess,so its concentration remains effectively constant during the reaction. The rate law is given by $Rate = k[CH_3COOCH_3]$. Thus,the reaction is of the first order,making it a pseudo unimolecular reaction.

Which of the following is an example of a pseudo unimolecular reaction?

Similar Questions

For the reaction $A + B \to$ products,doubling the concentration of $A$ the rate of the reaction is doubled,but on doubling the concentration of $B$ the rate remains unaltered. The overall order of the reaction is:

For a reaction $A + B \to \text{Products}$,the rate law is: $\text{Rate} = k[A][B]^{3/2}$. Can the reaction be an elementary reaction? Explain.

The rate of a certain reaction depends on concentration according to the equation $\frac{-dc}{dt} = \frac{K_1 C}{1 + K_2 C}$. What is the order of the reaction when the concentration $(C)$ is very high?

For the chemical reaction $2O_3 \rightarrow 3O_2$,the mechanism is given below. What will be the rate law expression?
$O_3 \rightleftharpoons O_2 + O$ ...... (fast)
$O + O_3 \rightarrow 2O_2$ ...... (slow)

The rate constant for the reaction $A \longrightarrow B$ is $2 \times 10^{-4} \ L \ mol^{-1} \ min^{-1}$. The concentration of $A$ at which the rate of the reaction is $(1 / 12) \times 10^{-5} \ M \ sec^{-1}$ is :-

Vedclass Test Series

Exam Paper Generator

Online Exam Module