50 mL of 0.1 M NaOH is added to 75 mL of 0.1 M `NH_4Cl` to make a basic buffer. If `pK_a" of "NH_4^+` is 9.26, calculate pH.

50 ml of 0.1 M NH_(4)OH, 25 ml of 2M NH_(4)Cl were used to make a buffer. What is the pH if pK_(a) is 4.8?

When 20 ml of 0.1 MNH_(4)OH are added to 20 ml of MNH_(4)Cl solution, the pH of the buffer formed is 8.2. What is the pK_(b) of NH_(4)OH ?

What will be the amount of (NH_(4))_(2)SO_(4) (in g) which must be added to 500 mL of 0.2 M NH_(4)OH to yield a solution of pH 9.35? ["Given," pK_(a)"of "NH_(4)^(+)=9.26,pK_(b)NH_(4)OH=14-pK_(a)(NH_(4)^(+))]

What will be the amount of (NH_(4))_(2)SO_(4) (in g) which must be added to 500 mL of 0.2 M NH_(4)OH to yield a solution of pH 9.35? ["Given," pK_(a)"of "NH_(4)^(+)=9.26,pK_(b)NH_(4)OH=14-pK_(a)(NH_(4)^(+))]

If 50mL 0.1(M) NaOH solution is added to 20 mL 0.25(M) CH_(3)COOH solution, then what will be the pH of mixed solution? [pK_(a)(CH_(3)COOH)=4.74] .