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CBSE Class 11-science Answered

10 ml of mixture of CH4, C2H4 and CO2 are exploded with excess O2. A contraction of 17ml was observed after explosion. After the treatment with KOH solution there was a 2nd contraction of 14ml. Find the % of gases in mixture
Asked by | 24 Jul, 2012, 21:04: PM
answered-by-expert Expert Answer

Let the volume of CH4 = x ml and volume of C2H4 = y ml

Hence volume of CO2 = (10 - x - y) ml

Since after the explosion, there was contraction of 17ml; this means that when the explosion takes place at that time water is in gaseous state, after the explosion water vapours converted into liquid state and the volume of liquid water is assumed to be zero.

Hence 2x + 2y = 17

Answered by | 27 Jul, 2012, 11:28: AM

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