Asked by Katlyn

1) What volume of 1.25 mol/L hydrobromic acid, HBr(aq) will neutralize 75.0 ml of 0.895 mol/L magnesium hydroxide Mg(OH)2(aq)?

2) a 25.00 mL sample of a nitric acid solution , HNO3(aq) is neutralized by 18.55mL of a 0.1750 mol/L sodium hydroxide, NaOH(aq) what is the concentration of the nitric acid solution?

Please help me with these two questions. Your help is very much appreciated! Thanks!!!:)
Answered by DrBob222
2HBr + Mg(OH)2 ==> MgBr2 + 2H2O
mols Mg(OH)2 = M x L = ?
Convert mols Mg(OH) to mols HBr using the coefficients.
Then M HBr = mols HBr/L HBr. You know mols and M, solve for L.

The second problem is work the same as the first
Answered by Dina
(d) Determine the pH of a partially dissolved solution of phosphorous acid at a concentration of 0.0025 mol/L and a volume of 50.0 mL.

(e) What is the concentration of OH ions in this solution?
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