Question:medium

The rate of the reaction, 2NO + Cl$_2$ $\rightarrow$ 2NOCl is given by the rate equation, rate = k[NO]$^2$[Cl$_2$]. The value of the rate constant can be increased by

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Key Exam Tip:
Factors Affecting Reaction Rate vs. Rate Constant:
• Concentration of Reactants: Affects the rate of the reaction but not the rate constant (k).
• Temperature: Affects both the rate and the rate constant (k). Higher temperature generally leads to a higher rate constant.
• Catalyst: Affects the rate by lowering the activation energy, thus increasing the rate constant (k). In this question, only temperature and a catalyst (not provided as an option) affect the rate constant.
Updated On: May 11, 2026
  • increasing the concentration of NO.
  • increasing the temperature.
  • increasing the concentration of the Cl$_2$.
  • doing all of these.
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The Correct Option is B

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