Calculate the heat of combustion (in {\kJ} ) of methane from the following data: (i) {\C}_{\text{(graphite) }}+2 {\H}_2(g) \to {\CH}_4(g) ∆ H=-74.8 kJ (ii) {\C}_{\text{(graphite) }}+ {\O}_2(g) \to {\CO}_2(g) ∆ H=-393.5 kJ (iii) {\H}_2(g)+1 \/ 2 {\O}_2(g) \to {\H}_2 {\O}(l) ∆ H=-286.2 kJ

EAMCET Engineering 2002 Solved Paper

Section: Chemistry

Question : 94 of 200

Marks: +1, -0

Calculate the heat of combustion (in kJ ) of methane from the following data:
(i) C‌(graphite) ‌+2H2(g)→CH4(g)‌‌∆H=−74.8 kJ
(ii) C‌(graphite) ‌+O2(g)→CO2(g)‌‌∆H=−393.5 kJ
(iii) H2(g)+1∕2O2(g)→H2O(l)∆H=−286.2 kJ

-8911
-816.3
-965.9
-1040.7

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