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Q.

A mixture of methane and ethylene in the volume ratio x:y has a total volume of 30ml. On complete combustion it gave 40ml of CO2. If the ratio had been y:x, instead of x:y, what volume of CO2 could have been obtained?

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a

75 mL

 

b

100 mL

c

25 mL

d

50 mL

answer is A.

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Detailed Solution

x(CH4) + y(C2H4) -------> (x+2y)CO2

x + y = 30ml, x + y = 40ml

30 + y = 40ml

y = 10ml, x = 20ml

Reactants= x+y =20 + 10 = 30ml

Products= y+2x = 10 + 2(20) = 50ml

Hence, the correct option is A.

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