Question

Equal masses of oxygen, hydrogen and methane are taken in container in identical condition. Find the ratio of the volumes of the gases

• A. 16:1:8
• B. 1:16:2
• C. 8:1:16
• D. 2:16:1

Answer 1

Answer: (B)

Step 1:

Let assume the mass = x

Number of moles = $n\left(O_2\right)=\frac{x}{32}$

$n\left(H_2\right)=\frac{x}{2}$

$n\left(C{H}_4\right)=\frac{x}{16}$

Step 2:

Now ,divide every value by smallest value which is $\frac{x}{32}$
$O_2:H_2:C{H}_4$

$\frac{\frac{x}{32}}{\frac{x}{32}}$ : $\frac{\frac{x}{2}}{\frac{x}{32}}$ : $\frac{\frac{x}{16}}{\frac{x}{32}}$

1 : 16 : 2

Hence, option (B) is correct.