The rate of a certain biochemical reaction at physiological temperature (T) occurs 106 times faster with enzyme than without. The change in the activation energy...

For the reaction of $\mathrm{H}_2$ with $\mathrm{I}_2$, the rate constant is $2.5 \times 10^{-4} \mathrm{dm} 3 \mathrm{~mol}^{-1} \mathrm{~s}^{-1}$ at $327^{\circ} \mathrm{C}$ and $...

If 75% of a first order reaction was completed in 90 minutes, 60% of the same reaction would be completed in approximately (in minutes)_______.

Consider the given plots for a reaction obeying Arrhenius equation $\left(0^{\circ} \mathrm{C}<\mathrm{T}<300^{\circ} \mathrm{C}\right)$ : ( k and $\mathrm{E}_{\mathrm{a}}$ are rate constant and activation energy, respectively)
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A sample of milk splits after 60 min. at 300 K and after 40 min. at 400 K when the population of lactobacillus acidophilus in...

The reaction $2 X \rightarrow B$ is a zeroth order reaction. If the initial concentration of $X$ is $0.2 M$, the half-life is $6 h$....

Consider the following plots of rate constant versus $\frac{1}{\top}$ for four different reactions. Which of the following orders is correct for the activation energies of...

During the nuclear explosion, one of the products is ${ }^{90} \mathrm{Sr}$ with half life of 6.93 years. If $1 \mu \mathrm{~g}$ of $...

The reaction rate for the reaction| $$ \left[\mathrm{PtCl}_4\right]^{2-}+\mathrm{H}_2 \mathrm{O} \rightleftharpoons\left[\mathrm{Pt}\left(\mathrm{H}_2 \mathrm{O}\right) \mathrm{Cl}_3\right]^{-}+\mathrm{Cl}^{-} $$ was measured as a function of concentrations of different species. It was...