Study carefully the reaction represented by the equation \(2 \mathrm{H}_{2} \mathrm{O}_{2} \quad \mathrm{O}_{2 \mathrm{an}}+2 \mathrm{H}_{20(1)}\)
Which of the following will not increase the reaction rate?

A. Heating the hydrogen peroxide
B. Adding a pinch of MnO, to the reactant.
C. increasing the concentration of the \(\mathrm{H}_{2} \mathrm{O}_{4}\)
D. Adding water to the reactant.  

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Correct Answer: D