JEE Main 2017 Chemistry question
Addition of sodium hydroxide solution to a weak acid (HA) results in a buffer of pH . If ionization constant of HA is , the ratio of salt to acid concentration in the buffer solution will be:
Answer: (1)
Solution
An acidic buffer obeys the Henderson–Hasselbalch equation
pH = \mathrm + .
From we get . Substituting,
6 = 5 + = 1
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