Chemistry, asked by sahalshsk, 11 months ago

How many millilitres of 0.8 M KOH should be added to 3.38 g of oxalic acid to give a pH of 4.0 when diluted to 500ml(Oxalic acid MW = 90.035; pK1 = 1.252, PK2 = 4.266)

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Answered by Kingsman24

Answer:The pH e are aiming for is above pK2. We know that a 1:1 mole ratio of HOx-:Ox2- wouldhave pH = pK2 = 4.266. If the pH = 4.40, there must be more Ox2 thanHOx-present.

Explanation:

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How many millilitres of 0.8 M KOH should be added to 3.38 g of oxalic acid to give a pH of 4.0 when diluted to 500ml(Oxalic acid MW = 90.035; pK1 = 1.252, PK2 = 4.266)​

Answers

How many millilitres of 0.8 M KOH should be added to 3.38 g of oxalic acid to give a pH of 4.0 when diluted to 500ml(Oxalic acid MW = 90.035; pK1 = 1.252, PK2 = 4.266)