Question

The kinetics of decomposition of N2O5 in CCl4 solution is studied by measuring th evolved oxygen. If 24 ml of the gas was evolved in one hour while 35 ml of the gas was evolved when no more oxygen was coming out calculate the fraction of N2O5 decomposed in one hour.

Answer 1

Dear student,

The reaction goes as:



We know that 22.4 litres are equivalent to 1 mole.

Hence, for 35 ml of gas, we have the number of moles of oxygen as:



Hence the initial number of moles of N2O5would be equal to:0.003125.