1. This document contains calculations for several acid-base chemistry problems. 2. It first calculates the concentrations of H+ and OH- ions when mixing solutions of HCl and NaOH. 3. It then determines the grams of KOH needed to neutralize an HCl solution and the volume of H2SO4 solution needed to neutralize a NaOH solution. 4. Finally, it uses the results of a titration experiment to calculate the molecular weight of an unknown monoprotic acid.

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Acids and Bases Probset Chem3
Oct.12/13,?Olt 20pts
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1, Calculate the [H.]and [OH-] of a solution made by mixing 25.0mL of 0.200M HCI and 49'0mL of
0.100M NaOH.
2. How many grams of KOH is needed to neutralize 25.0mL of 0.10M HCI solution?
3. What volume in mL of 0.30M H2SO4 solution ii needed to neutralize 15mL of a 0.50 M NaOH
solution?
A
a. Calculate the [H.], pH, [OH-] and pOH of a solution made by mixing 30.0mL 0.25M HI and 29.9mL
0.5M Na0H,
q
The titratio n of 0.2I 42 grams of unknown acid requir es 32,7 m L of 0, 1 0 28 M NaO H. Assuming
that the acid is monoprotic, calculate the molecular weight of the acid.

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