Question

A sample of oxygen gas has a volume of 545 mL at 35°C. The gas is heated to 151°C at constant pressure in a container that can contract or expand. What is the final volume of the oxygen gas?

Answer 1

At constant pressure, the gas temperature is directly proportional to volume of the gas. VoT= =Constant Initial volume (V)=545 mL Initial temperature(T) =35 °C = (35+273)K = 308K Final volume (V.)=? Final temperature(T) =151 °C =(151+273 )K = 424K Therefore, V_V₂ IĘ Tz 545 mL v 308K 424K Ex 424K 308K = 750 mL Hence, the final volume of the gas is 750 mL »V, 345 mL