Item 6 Correct Use the vapor pressures for hexane given in the following table t

Question

Item 6 Correct Use the vapor pressures for hexane given in the following table to estimate the following Part D Phase T (K) P (Pa) Solid 168 0.1296 Solid 178 1.111 Liquid 290. 1.400×104 Liquid 320. 4.822×104 the temperature of the triple point of hexane Express your answer with the appropriate units Submit My Answers Give Up Correct Part E the pressure of the triple point of hexane Express your answer with the appropriate units [193 ][bar Submit My Answers Give Up Incorrect; Try Again rovide Feedba Continue

Explanation / Answer

This can be solved using Antoine Equation:

log P (mmHg) = A - B / [C + t (oC)]

193K = 193-273 = -80 oC

Now from literature we find the antoine parameters as:

235

putting the values in equation

log P (mm Hg) = 7.01051 - 1246.33 / [232.988 -80]

= -1.136

P(mmHg) = 0.07311 mmHg

P(mmHg) = 9.748 x 10-5 bar

or = 9.7 Pa

data source http://ddbonline.ddbst.com/AntoineCalculation/AntoineCalculationCGI.exe?component=Hexane

No. A B C Tmin Tmax (1) 7.01051 1246.33 232.988 -95

235

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