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Calculate the calorific value of methane...

Calculate the calorific value of methane if it burns according to the equation
`CH_4(g) + 2O_2(g) to CO_2(g) + 2H_2O(l) , DeltaH = -890.0 kJ`

Text Solution

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According to the given equation, one mole (16 g) of methane produces heat equal to 890 kJ.
`:.` Heat produced per gram ` = (890.0)/16 = 55.6 kJ`
`=13.28 kcal`
(molar mass of `CH_4` = 16 and 1 kcal = 4.184 kJ)
Hence, the calorific value of methane is 55.6 kJ/g or 13.28 kcal/g.
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