4. Which of the following solutions is a buffer? (A) 0.10 M CH3COOH and 0.10 MCH3COONa (B) 0.10 M CH3COOH (C) 0.10 M HCI and 0.10M NaCL (D) both A and C (E) all of them: A, B, C. Group of answer choices D C only solution (B) is a buffer only solution (A) is a buffer.

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.