Question

A sample of hydrogen gas is collected and found to fill 2.85 Lat 25.0°C. What will be its volume at exactly 0°C?

Answer 1

`PV = nRT`

`PV = nRT = PV`

Thus,

`P_1V_1 = P_2V_2`

Note: use absolute temperature (e.g. K)

`2.85L*298.15K = 273.15K*V_2`
`therefore V_2 approx 3.11L`