The number of correct statement/s from the fo | vedclass

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

Question

(D) $A.$ Correct. According to the Arrhenius equation,$k = Ae^{-\frac{E_a}{RT}}$. As $E_a$ increases,the exponential term $e^{-\frac{E_a}{RT}}$ decrea

Vedclass · Accepted Answer

$4$

Vedclass · Answer

(D) $A.$ Correct. According to the Arrhenius equation,$k = Ae^{-\frac{E_a}{RT}}$. As $E_a$ increases,the exponential term $e^{-\frac{E_a}{RT}}$ decreases,so $k$ decreases.$B.$ Correct. The temperature coefficient is defined as $\frac{k_{T+10}}{k_T} = e^{\frac{10E_a}{RT(T+10)}}$. As $E_a$ increases,the value of the temperature coefficient increases.$C.$ Correct. The rate constant $k$ increases exponentially with temperature. The derivative $\frac{dk}{dT} = k \cdot \frac{E_a}{RT^2}$ shows that the rate of change of $k$ with respect to $T$ is higher at lower temperatures for a given $E_a$.$D.$ Correct. From $\ln k = \ln A - \frac{E_a}{R} \cdot \frac{1}{T}$,the plot of $\ln k$ vs $\frac{1}{T}$ is a straight line with slope $-\frac{E_a}{R}$.All four statements are correct. Therefore,the number of correct statements is $4$.

Similar Questions

For the decomposition of $N_2O_5,$ the reaction is $2N_2O_{5(g)} \rightarrow 4NO_{2(g)} + O_{2(g)}$ with activation energy $E_a.$ If the reaction is written as $N_2O_{5(g)} \rightarrow 2NO_{2(g)} + 1/2 O_{2(g)}$ with activation energy $E_a',$ what is the relationship between $E_a$ and $E_a'$?

The rate of a reaction $A$ doubles on increasing the temperature from $300 \, K$ to $310 \, K$. By how much should the temperature of reaction $B$ be increased from $300 \, K$ so that its rate doubles,if the activation energy of reaction $B$ is twice that of reaction $A$ (in $, K$)?

The rate of the chemical reaction doubles for an increase of $10 \, K$ in absolute temperature from $298 \, K$. Calculate $E_{a}$.

The reaction rate at a given temperature becomes slower,then

Vedclass Test Series

Exam Paper Generator

Online Exam Module