Question

For a substance, $T_C$ is roughly $1.6$ times, the normal boiling point temperature $(T$ in $K$) and $V_C$ is usually about $2.7$ times the normal boiling point molar volume. Find the normal boiling pressure at boiling point if $P_C$ is $10atm$. ($P_C,V_C$ and $T_C$ are critical parameters).

• A. $23.13atm$
• B. $231.3atm$
• C. $125.7atm$
• D. None

Answer 1

Answer: (D)

None

Given, $T_C=1.6T;$ $P_C=10atm;$ $V_C=2.7V$

We need to find $P.$

$\frac{PV}{T}=\text{constant}$

So, $\frac{PV}{T}=$$\frac{P_C{V}_C}{T_C}$

$\Rightarrow \frac{P\left(V\right)}{\left(T\right)}=$$\frac{10\left(2.7\right)V}{1.6\left(T\right)}$

$\Rightarrow P=\frac{2.7}{1.6}=16.87atm$