The law of Charles

Tutorial

A steel vessel contains argon under normal conditions of temperature and pressure (NTP). What will be the gas pressure at $100\;^oC$ ? Solution (Click): NTP: ..........$20\;^oC$ and $1.0\;atm$ As ..........le volume remains constant, the law of Charles is applicable: Conversion to $K$: ..........$20\;^oC=293.15\;K$ et $100\;^oC=373.15\;K$ Law of Charles: ..........$\frac{P_1 }{T_1}=\frac{P_2 }{T_2}$ Calculation: ..........$P_1=\frac{T_1\cdot P_2}{T_2}$ = $\frac{373,15\cdot 1}{293,15} = 1,27\;atm$