A mixture of ethyne (C_2H_2) and H_2 was mixed with 65 ml of O_2 and exploded in eudiometer tube. On cooling ,

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Q 1210267110.     A mixture of ethyne (C_2H_2) and H_2 was mixed with 65 ml of O_2 and exploded in eudiometer tube.

On cooling , it was found to have undergone a contraction of 35 ml. When treated with a KOH solution , a further contraction of 34 ml took place and 15 ml of O_2 alone was left behind. Find the percentage composition of ethyne and H_2 in the mixture.
A

C_2H_2 = 50 %, H_2 = 50%

B

C_2H_2 = 53.2 %, H_2 = 46.8%

C

C_2H_2 = 60 %, H_2 = 40%

D

None of these

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