List of top Chemistry Questions on Kinetics of Reaction

Among the following, which are examples of first-order reactions?

(A) \({}^{226}_{88}\text{Ra} \to {}^{4}_{2}\text{He} + {}^{222}_{86}\text{Rn}\)
(B) \(2NH_3 \xrightarrow[\text{Pt catalyst}]{1130\,K} N_2(g) + 3H_2(g)\)
(C) \(2N_2O_5(g) \to 2N_2O_4(g) + O_2(g)\)
(D) \(C_2H_4(g) + H_2(g) \to C_2H_6(g)\)

Choose the correct answer from the options given below:

A first-order reaction has a half-life of 20 minutes. The time required for \(87.5%\) completion of the reaction is:

Match Structure with their Common Name:

Choose the correct answer from the options given below:

Match Reaction with Reagent Required:

Choose the correct answer from the options given below:

Choose the correct statements: (A) For a gaseous reaction if the concentration of gas is expressed in terms of their partial pressure atm and time in minutes then unit of rate are \(\mathrm{atm\ min^{-1}}\). (B) The sum of power of the concentration of the reactants in the rate law expression is called order of that reaction. (C) The thermal decomposition of HI on gold surface is an example of second order reaction. (D) The overall rate of the reaction is controlled by the slowest step in a reaction called the rate determining step. Choose the correct answer from the options given below:

\(75%\) of a first-order reaction was completed in \(32\) minutes. How long will it take to undergo \(50%\) completion? Given: \(\log 2 = 0.3010\)

For the reaction: \[ 2A \rightarrow Products \] the rate law is: \[ \text{Rate}=k[A]^2 \] If the concentration of \(A\) is doubled, the rate of reaction will become:

The half-life of a first order reaction is 1386 s. The rate constant \(k\) is:

For a first-order reaction, the half-life is given by \( t_{1/2} = \dfrac{0.693}{k} \). Which conclusion is correct?