Find ph of the solution at equivalence point

 

1- Consider the following curve (Figure 1) for the titration of a weak base with a strong acid and answer each question. Determine the concentrations of HNO 2 and NaNO 2 after addition of 1.4g NaOH .

2- Consider the following curve (Figure 1) for the titration of a weak base with a strong acid and answer each question. Determine the concentrations of HNO 2 and NaNO 2 after addition of 1.4g HI

3- A buffer contains significant amounts of ammonia and ammonium chloride.Write an equation showing how this buffer neutralizes added base (CsOH). Express your answer as a chemical equation.

4-100 mL of 0.200 M HCl is titrated with 0.250 M NaOH. What is the pH of the solution after 50.0 mL of base has been added?Express the pH numerically.

5- 100 mL of 0.200 M HCl is titrated with 0.250 M NaOH .What is the pH of the solution at the equivalence point?Express the pH numerically.