Question

calculate percentage composition of carbon and hydrogen in ethane​

Answer 1

Answer:

hi ...

Explanation:

c2h6= (12×2)+(1×6)= 30

for c

(2×12÷30)100

=80%

for h

(6÷30)100

=20%

hope it helped you

Answer 2

Given: Ethane.

To find: We have to find the percentage composition of carbon and hydrogen in ethane.

Solution:

The formula of ethane is $C_2H_6$.

The atomic weight of C is 12 and H is 1.

Thus, the molecular weight of ethane is 12×2+6×1=30.

The total amount of C in ethane is 24u and the total amount of H in ethane is 6u.

Thus the percentage of C is

$\frac{24}{30} \times 100 = 80\%$

The percentage of H is

$\frac{6}{30} \times 100 = 20\%$

Thus percentage composition of carbon and hydrogen in ethane is 80% and 20%.