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

The $\Delta H$ value of the reaction $H_2 + Cl_2 \rightleftharpoons 2HCl$ is $-44.12 \ kcal$. If $E_1$ is the activation energy of the backward reaction and $E_2$ is the activation energy of the forward reaction,then for the above reaction:

For reactions $M, N, O$ and $P$,the activation energy order is $E_M < E_N < E_O < E_P$. For which reaction will the ratio $K_{310}/K_{300}$ be maximum?

The slope of the Arrhenius plot $(\ln k \, vs \, \frac{1}{T})$ of a first-order reaction is $-5 \times 10^{3} \, K$. The value of $E_{a}$ of the reaction is: (in $kJ \, mol^{-1}$)
$[\text{Given } R = 8.314 \, J \, K^{-1} \, mol^{-1}]$

The specific rate constant of a $1^{st}$ order reaction depends on the

For a reaction,the rate constant is expressed as,$K = A \cdot e^{-40000/T}$. The energy of activation is ....... $cal$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module