Question

The stockroom contains 1M NaAc (Sodium Acetate), 1M HAc (Acetic Acid),distilled water and strong acids and bases. You need to create a buffer solution that has a pH of 4.75 such that when 1 ml of 10M HCl is added to 100ml of your buffer, the resulting pH is 3.75 (+/- 0.1). What concentrations of HAc and NaAc do you need to create the buffer

Answer 1

Answer:

Explanation:

Buffer solutions resist a change in pH when small amounts of a strong acid or a strong base are added (Figure 1). A solution of acetic acid and sodium acetate (CH3COOH + CH3COONa) is an example of a buffer that consists of a weak acid and its salt. An example of a buffer that consists of a weak base and its salt is a solution of ammonia and ammonium chloride (NH3(aq) + NH4Cl(aq)).