What is the amount of potassium acetate to be added to 1 litre of N/10 acetic acid to make a buffer solution of pH=4 using acetic acid and potassium acetate? The dissociation constant of acetic acid =2*10^-5

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vikas askiitian expert · Answer

let the amount of potassium acetate = m grams

M(CH₃COOK) = m/92 .........1

normality of acetic acid = molarity*1

M₍ CH₃COOH) = 0.1

K_a = [salt][H⁺]/[acid]

PH =4 means [H⁺] = 10^-4

K_a = M(CH₃COOK][H⁺]/[CH_3COOH]

2*10^-5 = [m/92][10^-4]/[10^-1]

m= 1.84grams

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What is the amount of potassium acetate to be added to 1 litre of N/10 acetic acid to make a buffer solution of pH=4 using acetic acid and potassium acetate? The dissociation constant of acetic acid =2*10^-5

What is the amount of potassium acetate to be added to 1 litre of N/10 acetic acid to make a buffer solution of pH=4 using acetic acid and potassium acetate? The dissociation constant of acetic acid =2*10^-5

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