Chemistry Chemical Kinetics

The rate constant (k) of a reaction is measured at different temperatures (T), and the data are plotted in the given figure. The activation energy of the reaction in kJ mol?¹ is: 

The rate of a certain biochemical reaction at physiological temperature (T) occurs ${10}^6$ ${}^{}$ times faster with enzyme than without. The change in the activation energy upon adding enzyme is :

For the reaction

$2{\mathrm{H}}_2\left(\mathrm{g}\right)+2\mathrm{N}\mathrm{O}\left(\mathrm{g}\right)?{\mathrm{N}}_2\left(\mathrm{g}\right)+2{\mathrm{H}}_2\mathrm{O}$ , the observed rate expression is, rate = ${\mathrm{k}}_{\mathrm{f}}[\mathrm{N}\mathrm{O}{]}^2\left[{\mathrm{H}}_2\right]$ . The rate expression for the reverse reaction is:

For the following graphs,
Choose from the options given below, the correct one regarding order of reaction is:

For a chemical reaction A→B, it was found that concentration of B is increased by 0.2 mol L⁻¹ in 30 min. The average rate of the reaction is __________ *10⁻¹ mol L⁻¹ h⁻¹. (in nearest integer)

For a reaction of order n, the unit of the rate constant is:

An exothermic reaction X → Y has an activation energy 30 kJ mol^-1. If energy change $\Delta E$ during the reaction is -20 kJ, then the activation energy for the reverse reaction in kJ is-----------. (Integer answer)

Gaseous cyclobutene isomerizes to butadiene in a first order process which has 'k' value of 3.3 * 10^-4 s^-1 at 153°C. The time in minutes it takes for the isomerization to proceed 40% to completion at this temperature is______ (Rounded off the nearest integer)

If the activation energy of a reaction is 80.9 kJ mol^-1, the fraction of molecules at 700K, having enough energy to react to form products, is e^-x. The value of x is………. (Rounded-off to the nearest integer).

[use R = 8.31 J K^-1 mol^-1]

The rate constant of a reaction increases by five times on increase in temperature from 27°C to 52°C. The value of activation energy in kJ mol^-1 is………. (Rounded-off to the nearest integer).

[R = 8.314JK^-1mol^-1]