Question

How much amount of hydrogen (in g) is required to react with 36 g of carbon to form methane $\left({\text{CH}}_4\right)$?

• A. 12

Answer 1

The correct option is A 12
Gram atomic mass of carbon = 12 g

Gram atomic mass of hydrogen = 1 g

The chemical reaction for formation of methane is as follows:

$C\left(s\right)+2H_2\left(g\right)\to C{H}_4\left(g\right)12g4g16g$


Thus, 12 g of carbon react with 4 g of hydrogen to produce 16 g of methane.

Hence, mass of hydrogen required to react with 36 g of carbon = $\frac{4}{12}\times 36$ = 12 g