Question

A sample of gas has an initial temperature of 273 K and a volume of 12.8 L. If the temperature is increased at a constant pressure, will the volume increase or decrease. Indicate which one clearly. Find the new volume if the new temperature is 300 K?

Answer 1

we have Initial temperatme, T= 273 k I ni bal volume, Vi= 12.8L final temperature Tg = 300k det final or new volume is V₂. Using gas equation, we can write, (. This relation is ' valid for constant pressure) or V₂ = Vitz - 12 8 x 300 - 273 Or, vo z 12.88 300 L = 14,064 30, yes, if the temperature is increased at a constant bressme then the volume will abo increased because V&T fer isobaric process

Answer 2

SOLUTION :

As per gas law, PV = RT 

=> At constant pressure and R being gas constant, V is proportional to T .

So, as temperature rises at constant pressure, volume will INCREASE. (ANSWER).

 

New T = 300 K

So, 

 V new / V initial  = T new / T initial

=> V new / 12.8 = 300 / 273

=> V new = 300 / 273 * 12.8

=> V new = 14.066 L (ANSWER)