Concentration of H_3 O^(+)of aqueous barium hydroxide is 5 xx 10^(-9) mol L^(-1) What is the molar concentrationof barium hydroxide ?

Concentration of H_3 O^(+)of aqueous barium hydroxide is 5 xx 10^(-9)

1.	Concentration of H_3 O^(+)of aqueous barium hydroxide is 5 xx 10^(-9) mol L^(-1) What is the molar concentrationof barium hydroxide ?
Answer» Solution : IONIC product of water, `K_w = [H_3O^(+) ] [OH^(-)] = 1xx10^(-14)` Concentration of HYDRONIUM ion,` [H_3 O^(+) ]=5 xx 10^(-9) ` Concentration of hydroxyl ion, `[OH^(-)] = (K_w)/( [H_3 O^+])=(1 xx 10^(-14))/( 5 xx 10^(-9)) =2 xx 10^(-6) M` Hydroxyl ion concentration of base is given as, `[OH^(-) ]=2[Ba(OH)_2 ]` Concentration of` Ba(OH)_2= ( 2 xx 10^(-6) )/(2 )= 10^(-6)` M