Asked by Mohamed
What is the pH of 1.0M Na2SO3 (aq)solution at 25C?
a) 3.40
b) 6.03
c) 10.60
d) 7.96
e) 10.40
How can I get ph from only the Molarity?
a) 3.40
b) 6.03
c) 10.60
d) 7.96
e) 10.40
How can I get ph from only the Molarity?
Answers
Answered by
DrBob222
The pH is determined by the hydrolysis of the salt.
........SO3^2- + HOH ==> HSO3^- + OH^-
initial..1.0.............0.........0
change...-x..............x.........x
equil...1-x..............x.........x
Kb for SO3^2- = (Kw/k2 for H2SO3) = (HSO3^-)(OH^-)/(SO3^2-)
Substitute and solve for x = (OH^-) and convert to pH. k2 for H2SO3 in my text (an old one so look in your text for an up to date value) is 6.43E-8.
........SO3^2- + HOH ==> HSO3^- + OH^-
initial..1.0.............0.........0
change...-x..............x.........x
equil...1-x..............x.........x
Kb for SO3^2- = (Kw/k2 for H2SO3) = (HSO3^-)(OH^-)/(SO3^2-)
Substitute and solve for x = (OH^-) and convert to pH. k2 for H2SO3 in my text (an old one so look in your text for an up to date value) is 6.43E-8.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.