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MHT CET 2024 Chemistry question

ChemistryEquilibriumMHT CET 2024

Calculate pH of buffer solution containing 0.027 M weak acid and 0.054 M its salt with strong base if is 4.2

Answer: (A)

Solution

For an acidic buffer, the Henderson-Hasselbalch equation gives K_a\log$ = 4.2 +

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Question ID VK-093104