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Calculate the mass of sodium acetate (NaC2H3O2) that must be added to make 100 mL of...

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Chemistry

Calculate the mass of sodium acetate (NaC2H3O2) that must beadded to make 100 mL of an acetic acid/acetate buffer at pH = 5.0,given that you will use 5.0 mL of 0.50 M acetic acid.

1. Calculate the concentration of acetic acid after 5.0 mL of 0.50M acetic acid has been diluted to 100.0 mL.

2. Using the Henderson-Hasselbalch equation, calculate theconcentration of NaC2H3O2 need in the buffer.

3. Calculate the mass of NaC2H3O2 needed to make 100.0 mL ofsolution of the concentration you determined in part 2.

4. If you needed a buffer of pH 5.5, would you require more orfewer grams of NaC2H3O2? Why?

PLEASE HELP ME

Answer & Explanation Solved by verified expert
3.8 Ratings (513 Votes)
Reaction taken place CH3COOH CH3COONa Buffer pH of buffer 5 5 logHion in buffer Hion in buffer Antilog 5 105 1 Initial concentration of acetic acid M1 05 M    See Answer
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