Question

Calculate the volume occupied by $5g$ of acetylene gas at ${50}^{\circ }C$ and $740mm$ of pressure.

Answer 1

Applying ideal gas equation,

$PV=nRT$

Mass of acetylene = $2\times 12+2\times 1=26$

Moles = $\frac{5}{26}$

Pressure =$\frac{740}{760}atm$

$V=\frac{5\times 323\times 760\times 0.0821}{740\times 26}$

$=5.24L$