It enthalpies of formation for {C}_{2} {H}_{4}, {CO}_{2(g)} and {H}_{2} {O}_{(l)} at 25^{\circ} {C} and 1 atm pressure are 52,-394 and -286 {kJ} {/} {mol} respectively, then enthalpy of combustion of {C}_{2} {H}_{4(g)} will be (1995)

Correct Answer is : −1412kJ/mol

Class 11 NEET Chemistry Chemical Thermodynamics

Question : 91 of 96

Marks: +1, -0

It enthalpies of formation for C2H4,CO2(g) and H2O(l) at 25∘C and 1 atm pressure are 52,−394 and −286kJ/mol respectively, then enthalpy of combustion of C2H4(g) will be

(1995)

+141.2kJ/mol
+1412kJ/mol
−141.2kJ/mol
−1412kJ/mol

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