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0.5g of hydrocarbone gave 0.9 g water o...

`0.5g` of hydrocarbone gave `0.9 g ` water on combustion . The percentage of carbon in hydrocarbon is

A

`75.8`

B

`80.0`

C

`56.6`

D

`28.6`

Text Solution

Verified by Experts

The correct Answer is:
b
`%` of `H=(2)/(18)xx(wt. of H_(2)O)/("wt. of organic compound" )xx100`
`=(2)/(18)xx(0.9)/(0.5)xx100=20%`
Since percentage of hydrogen is 20. Therefore , remaining is carbon `i.e., 80%`
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