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Section CNAcids and Bases Probset Chem3Oct. 12/13, 201120pts

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SHOW ALL PERTINENT EQUATIONS, CALCULATIONS AND SOLUTIONS. BOX YOUR FINAL ANSERS

1. Calculate the [Htjand [OH-] of a solution made by mixing 25.0mL of 0.200M HCl and 49.0mL of0.100M NaOH.

2. How many grams of KOH is needed to neutralize 25.0mL of 0.10M Hel solution?

3. What volume in mL of 0.30M H2S04 solution is needed to neutralize 15mL of a 0.50 M NaOHsolution?

4. Calculate the [H+],pH, [OH-]and pOH ofa solution made by mixing 30.0mL 0.25M HI and 29.9mLO.5M NaOH.

5. The titration of 0.2142 grams of unknown acid requires 32.7 mL ofO.l028M NaOH.Assumingthat the acid is monoprotic, calculate the molecular weight of the acid.

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