Question

Please Help!!!
The dependence of the equilibrium constant of a reaction on temperature is given by the van’t Hoff equation: Ink=-deltaH^0/RT+C
Therefore, the ratio of the equilibrium constants at two different temperatures is: In K^1/K^2=deltaH^0/R(1/T2-1/T1)
Calculate the pH of water at its normal boiling point. Is the water acidic, basic, or neutral?

Answer 1

\[\LARGE \ln \left( K_1\over K_2 \right)={\Delta H^\Theta \over R}\left(\frac 1 T_2-\frac 1 T_1\right)\]

Answer 2

thats the question... do you know the answer?? and hw did you did you do thatt??

Answer 3

thats the question... do you know the answer?? and hw did you did you do thatt??

Answer 4

Do you know ΔH^Θ for water ?

Answer 5

No I cant find itt in the book that is why my friennd told me to come on this website and someone will help me me... so can you?

Answer 6

I'm just guessing here:

for the reaction: \(\large H_2O \rightarrow H^+ +\ OH^-\)
\[\Large \Delta H^\Theta= \left( \Large \Delta H^\Theta_{f (H^+)} +H^\Theta_{f (OH^-)}\right)-H^\Theta_{f (H_2O)}\]
\[\Large = (0+(-229.9))-(-289.8)=55.9{kJ \over mol}\]

Answer 7

from http://en.wikipedia.org/wiki/Enthalpy_of_formation and http://chemistry.about.com/od/chartstables/a/heatoformions.htm

Answer 8

Thank you