In which of the following compounds maximum heat is liberated on combustion of one mole of the compound ?
A
Hydrogen
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B
Methane
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C
Ethane
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D
Butane
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Solution
The correct option is D Butane One mole butane librates 2657kJ of heat. one of hydrogen gives 106 kJ of heat. One mole ethane librates 1390kJ of heat. One mole methane librates 891kJ of heat.