# Chemistry

1)A buffer solution that is 0.10 M sodium acetate and 0.20 M acetic acid is prepared. Calculate the initial pH of this solution.

The Ka for CH3COOH is 1.8 x 10-5 M. As usual, report pH to 2 decimal places.

*A buffered solution resists a change in pH.*

2)Calculate the pH when 28.8 mL of 0.035 M HCl is added to 100.0 mL of the above buffer.

3)Calculate how many mL of 0.100 M NaOH are needed to neutralize completely 55.0 mL of 0.0900 M HCl.

4)Calculate how many mL of 0.100 M NaOH are needed to neutralize completely 86.0 mL of 0.0400 M H2SO4 (forming Na2SO4 and water).

5)Calculate how many mL of 0.100 M NaOH are needed to neutralize completely 62.0 mL of 0.0600 M acetic acid.

1. See this post and the answer to it.
http://www.jiskha.com/display.cgi?id=1425953308

posted by DrBob222

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