Question

$16$ gm of an ideal gas ${SO}_x$ occupies $5.6$ L at STP. The value of $x$ is:

• A. $x=3$
• B. $x=2$
• C. $x=4$
• D. none of these

Answer 1

The correct option is B $x=2$

Number of moles $=\frac{V}{V_m}=\frac{5.6}{22.4}mol$

Mol. wt. of gas is $=\frac{mass}{no.ofmoles}=\frac{16\times 22.4}{5.6}=64$ g

$32+16x=64$.

$x=2$.