set4 - CHE 303 Problem set#4 LAST NAME FIRST 1 What...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
CHE 303 __________________ LAST NAME, FIRST Problem set #4 1) What pressure is needed to isothermally compress ice initially at - 5 o C and 1 bar so that it changes phase? At 0 ºC and 1 bar water density is 1000 kg/m 3 and ice density is 917 kg/ m 3 . Also at 0 ºC and 1 bar, l s h h - = 6010 J/mol. 2) One mole of a pure species exists in liquid-vapor equilibrium in a rigid container of volume V = 1 L, a temperature of 300 o K, and a pressure of 1 bar. The enthalpy of vaporization and the second virial coefficient in the pressure expansion are: h vap = 16,628 [J/mol] and B’ = - 1 × 10 -7 [m 3 /J] Assume the enthalpy of vaporization does not change with temperature. You may neglect the molar volume of the liquid relative to that of the gas. (a) How many moles of vapor are there? (b) This container is heated until the pressure reaches 21 bar and is allowed to reach equilibrium. Both vapor and liquid phases are still present. Find the final temperature of this system. At this pressure you need to use the viral equation of state given by
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This document was uploaded on 02/01/2010.

Page1 / 2

set4 - CHE 303 Problem set#4 LAST NAME FIRST 1 What...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online