A) 19 : 2
B) 18 : 11
C) 20: 17
D) 1:7
Correct Answer: A
Solution :
[a] : Mass of the organic compound (w) = 0.765 g Mass of the carbon dioxide formed (x) = 0.535 g Mass of the water formed (y) = 0.138 g Percentage of hydrogen\[=\frac{2}{18}\times \frac{y}{w}\times 100\] \[=\frac{2}{18}\times \frac{0.138}{0.765}\times 100=2%\] Percentage of carbon\[=\frac{12}{44}\times \frac{x}{w}\times 100\] \[=\frac{12}{44}\times \frac{0.535}{0.765}\times 100=19%\] So, the ratio of C:H= 19:2You need to login to perform this action.
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