JEE Main 2024 Chemistry question
Given below are two statements: Statement (I): A Buffer solution is the mixture of a salt and an acid or a base mixed in any particular quantities. Statement (II): Blood is naturally occurring buffer solution whose pH is maintained by H₂CO₃/HCO₃⁻ concentrations. In the light of the above statements, choose the correct answer from the options given below.
Answer: (A)
Solution
A buffer needs a weak acid (or base) and its salt in suitable proportions, not "any quantities". Blood is buffered by H₂CO₃/HCO₃⁻.