A sample of neon occupies a volume of 461 mL at STP. What will be the volume of the neon when?
2019-02-25 5:40 pm
A sample of neon occupies a volume of 461 mL at STP. What will be the volume of the neon when the pressure is reduced to 700 torr? Assume constant temperature.
回答 (2)
2019-02-25 6:18 pm
At STP: V₁ = 461 mL, P₁ = 760 torr
New: V₂ = ? mL, P₂ = 700 torr
For a fixed amount of gas at constant temperature (Boyle's law): P₁V₁ = P₂V₂
V₂ = V₁ × (P₁/P₂)
New volume, V₂ = (461 mL) × (760/700) = 501 mL (to 3 sig. fig.)
New: V₂ = ? mL, P₂ = 700 torr
For a fixed amount of gas at constant temperature (Boyle's law): P₁V₁ = P₂V₂
V₂ = V₁ × (P₁/P₂)
New volume, V₂ = (461 mL) × (760/700) = 501 mL (to 3 sig. fig.)
2019-02-25 5:53 pm
P1V1/T1 = P2V2/T2
(760)(461)/273 = (700)(V2)/273 <<< solve for V2
... const. temp .. cancels
V2 = (760)(461)/700 <<< use a calculator
(760)(461)/273 = (700)(V2)/273 <<< solve for V2
... const. temp .. cancels
V2 = (760)(461)/700 <<< use a calculator
收錄日期: 2021-05-01 22:31:55
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