When 20cm3 of a gaseous hydrocarbon were completely burnt in an excess of oxygen, 60cm3 of carbon dioxide and 40cm3 of water vapours were formed, all volumes being measured at same temperature and pressure. What is the formula of the hydrocarbon? А. С2H6 В. С3Н4 C. C3H6 D. С3Н8 E. C4H10
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Answered by
0
Answer:
20 +40cm =60cm and 60Xmas per CM = 180+60=Ans-240cm
Answered by
13
Answer:
C3H4
Explanation:
ratio
20/20 = 1 of hydrocarbon
60/20 = 3 of CO2
40/20 = 2 of H2O
CxHy + O2 -----> 3CO2 + 2H2O
3 CO2 => C = 3
2 H2O => H = 2×2 = 4
C3H4 + 4O2 -----> 3CO2 + 2H2O
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