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0.2 mole sample of a hydrocarbon CxHy yields after complete combustion with excess O2 gas,0.8 mole of CO2 and 1 mole H20. Find x and y.?
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- oeman50Lv 76 years ago
You need to find the mole ratio between the carbon and the hydrogen. Since each mole of water has 2 moles of H, the equation is:
2 mole H / 0.8 mole C = 2.5
You need a whole number to determine the whole molecule ratio, so multiply by 2 to get 5 moles of H and 2 moles of C.
Answer = C2H5.
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