safaaalramahi6 safaaalramahi6
  • 25-06-2022
  • Chemistry
contestada

How much 5.50M NaOH must be added to 680.0 mL of a buffer that is 0.0215 M acetic acid and 0.0270 M sodium acetate to raise the pH to 5.75?

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okpalawalter8
okpalawalter8 okpalawalter8
  • 27-06-2022

5.50M NaOH must be added to 680.0 mL of a buffer, The amount of NaOH  is mathematically given as

V=2.107mL

What is the volume of 5.50M NaOH?

Generally, the equation for Chemical Reaction is mathematically given as

CH3COOH+OH^{-} ⇄ CHCOO^{-} + H2O

Therefore

pka=-log(1.8*10{-5})

pKa=5-0.25527

pKa=4.3447

Hence

[tex]pH=pKa+log\frac{CH3COO}{CH3COOH}\\\\0.75=4.7447+log\frac{0.01564+x}{0.01428-x}[/tex]

x=0.0115898

Volume of NaOH

V=0.0021072L

V=2.107mL

Read more about Chemical Reaction

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