A 125mL sample of dry air at 230C is cooled to 100C at constant pressure. What volume will dry air occupy at 100C?
回答 (2)
2016-06-22 6:57 am
Before cooling : V₁ = 125 mL, T₁ = (273 + 230) K = 503 K
After cooling: V₂ = ? mL, T₂ = (273 + 100) K = 373 K
For a fixed amount of gas under constant pressure :
V₁/T₁ = V₂/T₂
Then, V₂ = V₁ × (T₂/T₁)
Volume of dry air at 100°C
= (125 mL) × (373/503)
= 92.7 mL
After cooling: V₂ = ? mL, T₂ = (273 + 100) K = 373 K
For a fixed amount of gas under constant pressure :
V₁/T₁ = V₂/T₂
Then, V₂ = V₁ × (T₂/T₁)
Volume of dry air at 100°C
= (125 mL) × (373/503)
= 92.7 mL
2016-06-22 3:42 am
PV = nRT
If everything else is constant, then V is proportional to absolute temperature T.
If everything else is constant, then V is proportional to absolute temperature T.
收錄日期: 2021-04-18 15:17:17
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