Question

2. A buffer solution is prepared via adding solution A (Sodium
dihydrogen phosphate 27.6 gm up to 1000mL distilled water) and
solution B (Disodium hydrogen phosphate 5.362gm up to 100mL
distilled water). During preparation, 1000 mL buffer is prepared
via adding 80mL of solution B to 920mL of solution A. Show a
theoretical approach to calculate the pH of the buffer solution. [5]​

Answer 1

Explanation:

dihydrogen phosphate 27.6 gm up to 1000mL distilled water) and

solution B (Disodium hydrogen phosphate 5.362gm up to 100mL

distilled water). During preparation, 1000 mL buffer is prepared

via adding 80mL of solution B to 920mL of solution A. Show a

theoretical approach to calculate the pH of the buffer solution. [5]