63 789
Assignments Done
99,3%
Successfully Done
In August 2018

Answer to Question #8271 in Inorganic Chemistry for will

Question #8271
Is H3PO4 a triprotic or diprotic acid, if it is a trprotic acid, then how do we explain its reaction with sodium hydroxide? i.e. H3PO4 + 2NaOH == Na2HPO4 + 2H2O.
Expert's answer
H3PO4 is a trprotic acid,but the reactivity of cleavage ща proton determine the dissociation constant. For the third proton is much smaller than for the second and first
H3PO4(s) + H2O(l) http://upload.wikimedia.org/wikipedia/commons/thumb/9/96/Equilibrium.svg/15px-Equilibrium.svg.png H3O+(aq) + H2PO4−(aq)
Ka1 = 7.25×10−3
H2PO4−(aq) + H2O(l) http://upload.wikimedia.org/wikipedia/commons/thumb/9/96/Equilibrium.svg/15px-Equilibrium.svg.png H3O+(aq) + HPO42−(aq)
Ka2 = 6.31×10−8
HPO42−(aq) + H2O(l) http://upload.wikimedia.org/wikipedia/commons/thumb/9/96/Equilibrium.svg/15px-Equilibrium.svg.png H3O+(aq) + PO43−(aq)
Ka3 = 3.98×10−13

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

Assignment Expert
24.04.12, 14:12

You're welcome. We are glad to be helpful.
If you really liked our service please press like-button beside answer field. Thank you!

will
22.04.12, 03:09

thank you very much

Leave a comment

Ask Your question

Submit
Privacy policy Terms and Conditions