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Question:

For the first order reaction, 2N2O5(g) → 4NO2(g) + O2(g)?

the half-life of the reaction decreases with increasing temperature

the half-life of the reaction depends on the initial concentration of the reactant

the reaction proceeds to 99.6

the concentration of the reactant decreases exponentially with time

Solution:

The concentration of reactant which is following first-order kinetics always decreases exponentially and becomes zero at infinity.