Question

The decomposition of hydrogen peroxide is a first-order reaction. The half-life of the reaction is 17.0 minutes. What is the rate constant of the reaction?

• A. 0.0508
• B. 0.0408
• C. 0.0612
• D. 0.0712

Answer 1

The correct option is B 0.0408

$k=\frac{0.693}{t_{\frac{1}{2}}}$
$k=\frac{0.693}{17.0min}=0.04077mi{n}^{-1}approximately\left(0.0408mi{n}^{-1}\right)$