Question

the hydrocarbon contain 79.87% carbon and 20.13% of hydrogen. what is its empirical formula. A CH. B CH2 C CH3 D C2H5​

Answer 1

Answer:

CH3.

Explanation:

The composition of carbon and hydrogen is 79.87% and 20.13% respectively also, the molar masses of carbon and hydrogen is 12 and 1. So, the moles will be 79.87/12 = 6.65 for Carbon and 20.13/1 = 20.13 for the hydrogen.

So, the atomic ratio for Carbon will be 6.65/6.65 =1 and for  the hydrogen will be 20.13/6.65 which will be 3.02. So, the simplest ratio will be found to be 1 and 3 for carbon and hydrogen respectively. So, the empirical formulae will be CH3.

Answer 2

Answer:

the above image has the answer

Explanation:

easy and understandable..