I assume you are to determine Ka from dGf values. Can you do that? What is Ka?
For b. dG = -RTlnK. Plug in R, T, dG and solve for K.
If you have the K values I can show you how to obtain % ionization.
a. Determine the percent ionization for a 1.00M phosphoric acid solution at 25.0 oC given the following (assume the small x approximation is valid)
H3PO4(aq) H2PO4(aq)H+(aq)
ΔGf (kJ/mol) -1142.6| -1130.2 | 0
b. Assuming ΔGf does not change with temperature, determine the percent ionization at 50.0 oC.
2 answers
DrBob222...I would assume if people KNEW how to answer a question they would NOT have to seek help on this site.
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