what is the solubility of manganese ii hydroxide mnoh2 is 22 x 10 5 m the ksp of mnoh2?Advertisement
The solubility of manganese (II) hydroxide (Mn(OH)2) is 2.2 x 10-5 M. What is the Ksp of Mn(OH)2? I keep getting the wrong answers. Can someone show me how to do this, please? - read more
Best Answer: Mn (OH)2 <----> Mn2+ + 2 OH- let x = moles/L of Mn(OH)2 that dissolve. This gives us x mol/L of Mn2+ and 2x mol/L of OH- Ksp = 2.0 x 10^-14 = x ( 2x)^2 = 4x^3 x = 1.7 x 10^-5 mol /L [OH-] = 2 x 1.7 x 10^-5 =3.4 x 10^-5 M pOH = - log 3.4 x 10^-5 =4.5 pH = 14 - 4.5 = 9.5 - read more
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