28.0 L of CO$_2$ is produced on complete combustion of 16.8 L gaseous mixture of ethene and methane at 25$^\circ$C and 1 atm. Heat evolved during the combustion process is ___________ kJ. Given : $\mathrm{\Delta H_c~(CH_4)=-900~kJ~mol^{-1}}$ $\mathrm{\Delta H_c~(C_2H_4)=-1400~kJ~mol^{-1}}$

Question

28.0 L of CO$_2$ is produced on complete combustion of 16.8 L gaseous mixture of ethene and methane at 25$^\circ$C and 1 atm. Heat evolved during the combustion process is ___________ kJ.

Given : $\mathrm{\Delta H_c~(CH_4)=-900~kJ~mol^{-1}}$

$\mathrm{\Delta H_c~(C_2H_4)=-1400~kJ~mol^{-1}}$

Correct Answer

847

Solution

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