1.
P1=P0-Ph=6 cmhg
2.
cmhg内气体PV=nRT=k
p1=k/V1;V1=30*S(S为玻管横截面及)
p2=k/V2;V2=29*S
P2=30/29*P1
P0'=P2+Ph=30/29*6+71=77.2069 cmhg
3.
相对于水银,空气热膨胀率更大,可忽略水银热膨胀
P0'=77.2069 cmhg=71+nR(T0+273.15)/V2
P0'=77.2069 cmhg=70+nR(T'+273.15)/V3
V2=29*S;V3=30*S
6.2069=nR(T0+273.15)/(29*S)
7.2069=nR(T'+273.15)/(30*S)
两式相比
T'=63.3520 摄氏度