What would be the volume of the vapour at STP?
how would i calculate the volume of a vapour at STP? and how would i calculate the desity of the vapour in grams per litre at STP?
here is the information i have:
mass of condensed liquid: 0.81g
temp: 100.3 C
barometrc pressure: 101.7kPa
volume of flask: 0.140
mass of flask+foil: 91.69g
mass of flask+foil+condensed liquid: 92.5g
plz show me how to do this=(
- Dr WLv 71 decade agoFavorite Answer
*** volume at STP ***
P1V1 / T1 = P2V2 / T2
V2 = V1 x (P1 / P2) x (T2 / T1)
V1 = 0.140...what's the units? Liters? I'll assume so...
P1 = 101.7 kPa
P2 = 101.325 kPa (that is the P at STP)
T2 = 273.15 K (that is T at STP)
T1 = 373.45 K... (100.3 C + 273.15 = 373.45 K.. right?)
V2 = 0.140 L x (101.7 kPa / 101.325 kPa) x (273.15K / 373.45K)
V2 = 0.103 L
*** density in g/mL at STP ***
0.81 g / 0.103 L = 7.9 g/L