The volume of the sample of propane at STP is 0.62 mL.
What is volume?
Volume is the amount of space that a substance or object occupies.
To calculate the volume of gas at STP, we apply the formula below.
Formula:
- PV/T = P'V'/T'................. Equation 1
Where:
- P = Initial pressure of gas
- V = Initial volume of gas
- T = Initial temperature of gas
- P' = Standard pressure (SP)
- T' = Standard temperature (ST)
- V' = Volume of gas at STP.
Make V' The subject of the equation
- V' = PVT'/P'T.............. Equation 2
From the question,
Given:
- P = 320 torr
- V = 1.73 mL
- T = 30 °C = (30+273) K = 303 K
- P' = 760 torr
- T' = 273 K
Substitute these values into equation 2
- V' = (320×1.73×273)/(760×303)
- V' = 0.62 mL
Hence, the volume of the sample of propane at STP is 0.62 mL.
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