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Grade: 12
        On complete combustion of 2 gm methane 26575 cals heat is generated. The heat of formation of methane will be(Given heat of formation of CO2=-97000 and H20=-68000)
2 years ago

Answers : (1)

Asha choudhary
13 Points
							
For 2gm CH -26575 cals
For 16gm -( 26575÷2)×16=212600
Now for C + 2H= CH4
Heat of formation of CO2 +2(heat of formation of H2O ) -heat of combustion of CH4 
=-97000+2(-68000)-(-212600)
=-97000-136000+1212600
=-20400
one year ago
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