suppose you have a gas tight syringe with 25.0 mL of carbon dioxide at room temperature (20.0 C). What would be the final volume if you hold the syringe in your hand to warm it to 37.0 C?
2007-05-08 22:04:42 · 3 answers · asked by stephen_gainey 1 in Science & Mathematics ➔ Chemistry
Use PV=nRT.
The fact that you mentioned the gas is contained in a syringe shows that the volume will be changed to maintain the pressure.
At RTP, P' = nRT'/V'
At 310K, V" = nRT"/P"
since P" = P', => V"= T"/(T'/V')
Therefore V" = 26.45 mL
(temperature is measured in Kelvin for ideal gas equation.)
2007-05-08 22:26:29 · answer #1 · answered by Ron 3 · 0⤊ 0⤋
I am presuming that the syringe is gas tight but the piston inside the syring is free to move. In such a case, you should use the equation PV = RT and since by the motion of the piston the pressure remans constant, we can write
V1 = RT1 and V2 = R T2 and R = V1/T1 so V2 = V1.T2/T1
where T1 and T2 are temperatures in degrees Kelvin. So,
V2 = 25 X 310/293 = 26.45 ml
2007-05-09 05:21:00 · answer #2 · answered by Swamy 7 · 0⤊ 0⤋
the volume would be the same i guess. Volume never changes.
2007-05-09 05:08:00 · answer #3 · answered by rahrahblank 2 · 0⤊ 1⤋