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posted by  lelethelion on 11/3/2009 3:16:14 PM  |  status: Live  |  Earned Karma: 25

Quantitative Chemical Analysis-Please Help!

Course Textbook Chapter Problem Needs by
N/A N/A N/A N/A 11/4/2009 at 8:00:00 PM
Question Details:
1) The acid dissociation constats for phosphoric acid (H3PO4) ARE
K1=7.11x10^-3   K2=6.32x10^-8  K3=4.5x10^-3
a) what will be the concentration of the undissoaciated (H3PO4) form of phosphoric acid if you prepare 1.0 L of a solution that has 0.20 moles of H3PO4 at pH 8.0?
b) Calculate the hydronium ion concentration of 1.00x10^-3 M Na2HP04
2) A silver nitrate solution contains 14.77 g of AgNO3 in 1.0 L. What volume of the solution will be needed to react with 0.2631g of Nacl? (Ag=107.7 g, N=14, Na=23, Cl=35.5)
Tags: Chemistry
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