Molar Velame of Carbon Dioside Data and Report Sheet Nanne Section Date Trial 1
ID: 635236 • Letter: M
Question
Molar Velame of Carbon Dioside Data and Report Sheet Nanne Section Date Trial 1 Trial 2 1. Mass of sample (g) 2, Mass of generator + sample before reaction (g) 3. Volume of CO, (g) collected (mL) 4 Volume of CO,(g) collected (L 5. Temperature of water C) C7ou 4 APS 44.7801 3.33.0 O3L033 dtr &Barometric; pressure (tom) Pr :Ive-7. Vaper pressure ofwater (tom) er: iet",Hop 75- 20 et 49-227 Pressure of dry co,te (o-Par-the 742 56 9 Mas of gencrator+ samiple aher reaction (g)41 5941 10 Mass loss of generator-mass CO, evolved (g 11. Volume of CO;(g) at STP (See Equation 2) 2 Moles of CO (g) geerated 44:50o use the molar mass of CO; and the mass loss (10) 13. Molar Velume of CO ()STP (Lmol molesof CO 14 Ave molar volune of CO,(g) at STP Ln average of two runs) Co- A 2.4- 7415? 760 o-931L 277Explanation / Answer
Trial 1
Mass of generator = (mass of generator + sample before reaction ) - (mass of generator)
= 44.6815 - 0.1705
= 44.511 g
Mass of sample after reaction = (mass of generator + sample after reaction) - mass of generator
= 44.599 - 44.511
= 0.088 g
Mass of CO2 evolved = 0.088 g
Volume of CO2 at STP = 0.031 L x (273/295.5) x (748.56/760)
= 0.0282 L
Moles of CO2 generated = mass /molecular weight
= 0.088 g / 44g/mol
= 0.0020 mol
Molar volume = 0.0282 L / 0.0020 mol
= 14.1 L/mol
Trial 2
Mass of generator = (mass of generator + sample before reaction ) - (mass of generator)
= 44.7801 - 0.1700
= 44.6101 g
Mass of sample after reaction = (mass of generator + sample after reaction) - mass of generator
= 44.501 - 44.6101
= 0.1091 g
Mass of CO2 evolved = 0.1091 g
Volume of CO2 at STP = 0.033 L x (273/295.5) x (749.173/760)
= 0.030 L
Moles of CO2 generated = mass /molecular weight
= 0.1091 g / 44g/mol
= 0.0025 mol
Molar volume = 0.030 L / 0.0025 mol
= 12 L/mol
Average molar volume = (14.1 + 12)/2 = 13.05 L/mol
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