The Vapour Pressure P of Liquid Diethyl Ether, (C₂H₅)₂O, May

question 12

Multiple Choice

The vapour pressure p of liquid diethyl ether, (C₂H₅) ₂O, may be calculated for different temperatures T using the expression
Log (p/bar) =A-B/T
Where, for the temperature range 24 to 48 °C, A = 4.743 and B = 1466.30 K. What is the vapour pressure of liquid diethyl ether at 25 °C?

• A) 1.01 bar
• B) 4.74 bar
• C) 0.175 bar
• D) 0.668 bar

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