Calculate the amount of `NH_(4)C1` required to dissolve in `500mL` of water to have a `pH = 4.5, K_(b) = 2.0 xx 10^(-5)`.

Calculate the amount of NH_(4)Cl required to dissolve in 500mL of water to have a pH = 4.5, K_(b) = 2.0 xx 10^(-5) .

Calculate the amount of NH_(4)Cl required to dissolve in 500 mL of water to have a pH of 4.5 . K_(b) = 1.8 xx 10^(-5)

Calculate the amount of NH_(4)Cl required to dissolve in 500 mL of water to have a pH of 4.5 . K_(b) = 1.8 xx 10^(-5)

a. What amount of H_(2)SO_(4) must be dissolved in 500mL of solution to have a pH of 2.15 ?

How many moles of NH_(4)C1 should be added to 200mL solution of 1.18 M NH_(4)OH to have a pH of 9.60. K_(b) of NH_(4)OH= 2 xx 10^(-5)

How many moles of NH_(4)Cl should be added to 200mL solution of 0.18 M NH_(4)OH to have a pH of 9.60. K_(b) of NH_(4)OH= 2 xx 10^(-5)

Calculate the amount of (NH_4)^2SO_4 in g which must be added to 500 mL of 0.2 MNH_3 to yield a solution of pH=9.35, K_b for NH_3 = 1.78xx10^-5

a. What amount of H_(2)SO_(4) must be dissolved in 500mL of solution to have a pH of 2.15 ? b. What amount of KOH must be dissolved in 200mL of solution to have a pH of 12.3 ? c. What amount of ca(OH)_(2) must be dissolved in 100mL of solution to have a pH of 13.85 ?