Acids And Bases

Question 1

Describe how you would obtain the pH curve for the titration

Answer 1

Measure the ph of th acid

Add alkali of the known vol in small portions

Stir the mixture

Measure the ph

Question 2

How can a solution act as a buffer when small amounts of acid or small amounts of alkali are added

Answer 2

When acid H+ ions are added the concentration of the H+ increases moving the equilibria to the left

When alkali added the OH- ions react with the H+ ions equilibria moves to the right (to replace H+)

Concentration of H+ is almost constant throughout