March 6,2009

March 6,2009 - March 6,2009 Thin glass permeable to H+ but...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
March 6,2009
Background image of page 1

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

View Full DocumentRight Arrow Icon
Thin glass permeable to H + but not anions Inside Outside 2x10 -6 ? Measure Δψ = ψ i – ψ o = -25ln{[H] I /[H] o ) Δψ = +18mV 18 = -25ln{2x10 -6 /[H] o } 0.7 = - ln{2x10 -6 /[H] o } • 2 = + [H] o /2x10 -6 [H] o = 4x10 -6
Background image of page 2
Osmotic Pressure Π = RT c c concentration RT = 25 L atm mol -1 1M solution against pure water pure water moves into solution to “dilute” so both concentrations approach each other/ Excess water pressure opposes this flow to keep an equilibrium
Background image of page 3

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

View Full DocumentRight Arrow Icon
Π = 1M (RT) = 1x25 = 25 atm. 1atm supports 33ft of water 25 atm support 820 feet of water
Background image of page 4
First Law of Thermodynamics Energy is conserved Heat q [ system ] work (w) q w both forms of energy If added to system, the internal energy E goes up by ΔE comes from either q or w
Background image of page 5

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

View Full DocumentRight Arrow Icon
First Law ΔE = q + w Many different ways to get same ΔE q w ΔE 50 0 50 100 -50 50 -20 +70 50 Once inside not heat or work just internal energy
Background image of page 6
Using heat and work
Background image of page 7

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

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 18

March 6,2009 - March 6,2009 Thin glass permeable to H+ but...

This preview shows document pages 1 - 8. Sign up to view the full document.

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