Question

If the intermolecular forces vanish away, the volume occupied by the molecules of $4.5kg$ water at $STP$ will be:

• A. $5.6m^3$
• B. $5.6L$
• C. $11.2L$
• D. $11.2m^3$

Answer 1

Answer: (A)

$5.6m^3$

In the absence of intermolecular forces, water will exist in the vapour phase.
$\therefore PV=\frac{w}{M}RT$
$1\times V=\frac{4.5\times {10}^3}{18}\times 0.0821\times 273$
$\therefore V=5603L=5.6m^3$