JEE Main Chemistry question
A buffer mixture of acetic acid and potassium acetate has pH=5.24. The ratio [CH₃COO⁻]/[CH₃COOH] in this buffer is (pKa=4.74):
Answer: (A)
Solution
log(ratio)=5.24−4.74=0.5; ratio=.5≈3.16≈3:1.
A buffer mixture of acetic acid and potassium acetate has pH=5.24. The ratio [CH₃COO⁻]/[CH₃COOH] in this buffer is (pKa=4.74):
log(ratio)=5.24−4.74=0.5; ratio=.5≈3.16≈3:1.