Q.

When C2H4 is burnt in air, carbon dioxide and water are formed. If on combustion of C2H4  , 2 mole of CO2 is produced, calculate the number of drops of water produced along with this quantity of CO2 if each drop contains 6.022×1021 water molecules.

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answer is 200.

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Detailed Solution

we know that,

C2H4+3O22CO2+2H2O

Then we calculate the value

2×6.023×10236.023×1021

=200 drops , 

when combustion of C2H4  , 2 mole of CO2 is produced, 200 number of drops of water produced along with this quantity of CO2 .

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