Question

On , heating a flask at constant pressure, from ${27}^{o}C$ to ${227}^{o}C$, 200mL of air was expelled out. what was the volume of the flask?

Answer 1

Let the initial volume be x
We can apply Charles law,

$\frac{V_1}{T_1}=\frac{V_2}{T_2}=k$

$\frac{x}{300}=\frac{V_2}{500}$

$\frac{V_2}{x}=\frac{5}{3}$$V_2=\frac{5x}{3}$

$\frac{5x}{3}-x=\frac{2x}{3}=200$
$⟹x=300$
The volume of the flask was 300 ml