Ask a New Question

Question

Ca(OH)^2 does not completely dissociate. It only partially dissotiates in water to form OH- and Ca+2. An equilibrium mixture of Ca(OH) and its dissolved ions is found to have a pH= 10.3 what is Kc for this dissociation?
13 years ago

Answers

DrBob222
pH = 10.3.
pH + pOH = pKw = 14; therefore, pOH = 3.7 and pOH = -log(OH^-).
(OH^-) = 2E-4

............Ca(OH)2 ==> Ca^2+ + 2OH^-
................x.........x........2x
Kc = (Ca^2+)(OH^-)^2
(Ca^2+) = 1/2(2E-4)
(OH^-) = 2E-4
Solve for Kc.
13 years ago

Related Questions

im not completely sure im right with this question a lawn spreader is pushed across a lawn by a... 63x^2 - 42x + 700 completely 8x-(2x+7)=23I am completely drawing a blank as to how I am suppose to solve this. Can someone offer... is 3(2y^2-5)(y+1) completely factored if 6.00g of CH4 was completely combusted in 15.00g of O2. How much H2O and CO2 will be produced? I need help. I am completely lost on how to solve the answers for the Lesson 8 Unit 7 System Of Ineq... Is x(4x2+8x+6) completely factored? If not, how else can it be factored? Responses no; 2 can b... Actually, that's Is Completely Nonsense! None Of that Is true. The Previous Question you answered wa... Is x (4x2 + 8x + 12) completely factored? If not, what other factoring can occur? If we are to be completely honest with ourselves, we must admit that there is risk in any course w...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use