Question

The rate of reaction is given by the rate equation rate $=k\left[NO{]}^2\right[C{l}_2]$. The value the rate of constant can be increased by:

$2NO+C{l}_2\to 2NOCl$

• A. increasing the temperature
• B. increasing the concentration of $NO$
• C. increasing the concentration of the $C{l}_2$
• D. doing all of above

Answer 1

The correct option is A increasing the temperature

Rate constant is independent of the initial concentration of the reactants. It has a constant value at a fixed temperature. Hence the value of rate constant can be increased by increasing the temperature.

When the temperature is increased, the fraction of molecules having energy equal to or greater than the activation energy increases. This increases the rate of the reaction.