Final Exam #15

[Anuradha S 1F]

On the final, #15 asked us to find _ionization for H20 --> OH- + H+. How were we supposed to find this? I googled the _formation of H2O and OH- and used _products - _reactants. Was this the right way to go about it or did we have to use the pH or _fus some how?

[Prasanna Padmanabham 4I]

I tend to forget stressful scenarios, so I don't remember what was on the final lol, but I believe I used the Van't Hoff equation.

The equation relates delta H, two equilibrium and two different temperatures together. I used information given in the previous equation for the K values and T values. Using those values I solved for H...

Page 432 in the textbook goes over the Van't Hoff equation and used different "forms" from the page to answer the questions on that section of the test...


but I don't know if that was the right way....I'm sure Dr. Lavelle will publish answer soon and I'll know for sure if my method was right.

[Eugene Chung 3F]

On the final, #15 asked us to find _ionization for H20 --> OH- + H+. How were we supposed to find this? I googled the _formation of H2O and OH- and used _products - _reactants. Was this the right way to go about it or did we have to use the pH or _fus some how?

I believe I used the van't hoff equation..
lnK = -deltaH/RT + deltaS/R or ln(K2/K1) = deltaH(rxn)/ R (1/T1 - 1/T2)

[Ayushi2011]

You use the van't hoff equation.