Question

A confined amount of gas at 10°C has pressure of 2.5atm. what is its new pressure if the temperature is increased to 50°C?

Answer 1

$T_1 = 10°C = 273K + 10 = 283K\\ P_1 = 2.5atm$

$T_2 = 50°C = 273K + 50 = 323K\\ P_2 = ?$

Using Gay-Lussac's law,

P1/T1 = P2/T2

2.5/283 = P2/323

P2 = 2.5×323/283 = 2.853 atm

Therefore, the new pressure is 2.853 atm.