Homework Help: Chemistry(Please help)

Posted by Hannah on Sunday, April 29, 2012 at 3:56pm.

Calculate the concentration of HCO3- in an aqueous solution of 0.0885 M carbonic acid, H2CO3 (aq).

I was going to set this up as 0.0885 -x = ? Am I suppose to use the Ka value for carbonic acid?

Chemistry(Please help) - DrBob222, Sunday, April 29, 2012 at 4:59pm
Yes, k1 for carbonic acid.
Chemistry(Please help) - Hannah, Sunday, April 29, 2012 at 5:30pm
0.0885 - x = 4.2e-7

Then I added 0.0885 to the right side and got 8.85e-2. Would this be the concentration or do I need to do another step?
Chemistry(Please help) - DrBob222, Sunday, April 29, 2012 at 6:02pm
You need another step.
H2CO3 --> H^+ + HCO3^-
.0885-x...x......x

k1 = (H^+)(HCO3^-)/(H2CO3)

Answer this Question

Related Questions

Chemistry - 1. An aqueous solution contains 0.154 M ascorbic acid (H2C6H6O6) and...
chemistry - A 0.942 M sample of carbonic acid, H2CO3, has a measured hydronium ...
chemistry (acid-ionization constant) - A 0.942 M sample of carbonic acid, H2CO3...
Chemistry - 1.0L of aqueous solution in which [H2CO3]=[HCO3^-]=0.10M and has [H...
Chemistry - Write a net ionic equation for the overall reaction that occurs when...
chemistry(PLease Help) - An aqueous solution contains 0.223 M carbonic acid and ...
chemistry - Carbonic acid, H2CO3, decomposes into water and a gas. Write the ...
Chemistry - Calculate [CO32- ] in a 0.019 M solution of CO2 in water (H2CO3). If...
chemistry - how do I write a balanced equation showing aqueous hydrogen ...
chemistry 12 - For the acid-base neutralization reaction of Carbonic acid, H2CO3...

For Further Reading

First Name:
School Subject:
Answer: