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Question

The amount of water obtained from combustion of 16grams of methane is_______

A
16g
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B
36g
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C
32g
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D
62g
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Solution

The correct option is B 36g
CH4(g)+2O2CO2(g)+2H2O(g)
According to the above equation, one mole of CH4(16 g) on combustion gives one mole of carbon dioxide and 2 moles of water and 2 moles of water =2×(2+16)=36 g of water.

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