Which factor has the LEAST impact on the rate of a reaction involving large, complex biomolecules?

In the reaction $P + Q o R$, the enthalpy change is $-3.5 ext{ kJ mol}^{-1}$ and the activation energy is $8.2 ext{ kJ mol}^{-1}$. Select the potential energy profile that accurately reflects these values.

The activation energy of exothermic reaction$A o B\;\;80\;kJ\;{\rm{mo}}{{\rm{l}}^{ - 1}}$. The heat of reaction is $200\;kJ\;\;{\rm{mo}}{{\rm{l}}^{ - 1}}$. The activation energy for the reaction $B o A\;\;kJ\;\;{\rm{mo}}{{\rm{l}}^{ - 1}}$ will be

Which statement is not correct?

The enthalpy change for the reaction $C o D$ is $-5.1 ext{ kJ mol}^{-1}$, and the activation energy is $10.5 ext{ kJ mol}^{-1}$. Which of the following potential energy diagrams accurately represents this reaction?

Increasing the temperature of a reaction generally increases the reaction rate. Which aspect of collision theory best explains this observation?

For a reaction to occur according to collision theory, the colliding molecules must have:

Which of the following theory is not related to chemical kinetics?

Which statement best describes the relationship between activation energy and reaction rate?

For a second-order reaction, the slope of the Arrhenius plot $\left( \ln k \ \rm{v/s} \frac{1}{T} \right)$ is determined to be $-10 imes 10^3 \ K$. Calculate the activation energy ($E_a$) for this reaction. (Use $R = 8.314 \ \rm{J} \ {\rm{K}}^{-1} \rm{mol}^{-1}$).

The addition of a catalyst during a chemical reaction alters which of the following quantities?