Question

The oxidation of hydrogen peroxide by permanganate occurs by the reaction 2KMnO4 (aq) + 3H2SO4 (aq)...

The oxidation of hydrogen peroxide by permanganate occurs by the reaction 2KMnO4 (aq) + 3H2SO4 (aq) + 5H2O2 (aq) → 2MnSO4 (aq) + 8H2O (l) + 5O2 (g) + K2SO4 (aq) Define the rate of reaction in terms of each of the reactants and products.

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Answer #1

Solution :-

Rate equation for the reactions are as follows

Rate of reaction is change in concnetration over change in time

Using reactant concnetrations.

Rate = - (1/2) delta [KMnO4] / Delta T

Rate = - (1/3) Delta [H2SO4]/ delta T

Rate = -(1/5) delta [H2O2]/delta T

For the reactants negative sign is used because the concentration of the reactant decrease in the due course of time during the reaction.

Using products

Rate = 1/2 delta [MnSO4]/delta T

Rate = 1/8 delta [ H2O]/delta T

Rate = 1/5 delta [O2] / delta T

Rate = delta [K2SO4]/delta T

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