Saturday
December 20, 2014

Homework Help: chemistry

Posted by pH levels on Saturday, July 30, 2011 at 7:02pm.

What is the pH of an aqueous solution of 0.10 M NaHC(3)H(2)O(4)?

Answer: 10.9

What I did:

NaHC(3)H(2)O(4) + H(2)O--><--
Na + H(2)C(3)H(3)O(4) + OH

H(2)C(3)H(3)O(4) is Malonic acid with a Ka value of 1.5*10^(-3)

initial-change-equilibrium (i.c.e) table results: (x^2)/(0.10-x)

x= 8.16*10^(-7)

[OH] = x
pOH = -log(x)
pH = 14-pOH
pH = 7.91

not sure what I did wrong.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - considering the polarity of each compound and that of a solvent in ...
Chemistry - Can u please give me a balanced eqn. for the reaction of Malonic ...
chem - Malonic acid and succinic acid each have two different pKa values. ...
Chemistry - What is the [H+] of a 0.1 M malonic acid with a Ka of 10^-9 solution...
chemistry - the titration of 25.0 mL of a 0.040 M aqueous solution of maleic ...
Chemistry - What volume of 0.200M of aqueous solution of formic acid, a weak ...
chemistry - (Dr. Bob222) - A student attempted to synthesize malonic acid which ...
Chemistry - 1. An aqueous solution contains 0.154 M ascorbic acid (H2C6H6O6) and...
Org. Chem. - Why would hydrogen bonding not occur between benzophenone and water...
chemistry - An aqueous solution of nitric acid is standardized by titration with...

Search
Members