Sunday
April 19, 2015

Homework Help: Chemistry

Posted by jhon on Thursday, February 16, 2012 at 12:49am.

If a 2.6 g of weak diprotic acid were dissolved in 100 mL of water and a 10 mL aliquot of this solution required 21.6 mL of 0.1 M NaOH to reach the first endpoint, what are the equivalent and formula weights of H2A?

I think I first need to find the moles of NaOH. Then, by using the formula.

H2A + 2NaOH ----> Na2A + 2 H20

I am stuck from here. Do I find the equivalence point of each and add them?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

College Chemistry - I need help with this question!! a sample of pure KHP ...
chemistry - Suppose that 0.483 g of an unknown monoprotic weak acid, HA, is ...
Chemistry - When we mix NaOH and H2SO4 we get the equation OH-(aq) + H+(aq) --&...
Chemistry - 1 g of acid was mixed with 120 ml of distilled water and the ...
chemistry - A 2.5 g sample of NaOH (Mw = 40.00) was dissolved in water to give a...
Chem - Using the standardized NaOH solution, the student weighs out 0.2550g of a...
Chem - Using the standardized NaOH solution, the student weighs out 0.2550g of a...
chemistry - Run # Volume NaOH used (mL) 1 4.1 2 4.3 3 2.8 Concentraion of NaOH: ...
chemistry - a 205 mg sample of diprotic acid is dissolved in enough water to ...
Physical Chemistry - If 20.0mL of 0.122M NaOH are required to reach the first ...

Members