Question

The rate constant for the reaction is n2o5 3 into 10 raise to minus 5 per second if the rate is is 2.4 into 10 raise to minus 5 mole per litre per second then the concentration of n2o 5 in mole per litre is

Answer 1

Answer:

0.8 mole / litre

... Predict the order of rxn by the unit of rate consnt (k).. Then solve..

Answer 2

The concentration of $N_2O_5$ is 0.8 mol/L

Explanation:

Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

$2N_2O_5\rightarrow 4NO_2+O_2$

As units of rate constant is $sec^{-1}$, the order of reaction is first order.

$rate =k[N_2O_5]^1$

Given : rate = $2.4\times 10^{-5}$

rate constant = k = $3\times 10^{-5}$

$2.4\times 10^{-5}=3\times 10^{-5}\times [N_2O_5]^1$

$[N_2O_5]=0.8mol/L$

The concentration of $N_2O_5$ at that time will be 0.8 mol/L

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