<u>Answer:</u> The
for calcium hydroxide is 
<u>Explanation:</u>
To calculate the concentration of acid, we use the equation given by neutralization reaction:

where,
are the n-factor, molarity and volume of acid which is 
are the n-factor, molarity and volume of base which is 
We are given:

Putting values in above equation, we get:

The concentration of
comes out to be 0.011 M.
The balanced equilibrium reaction for the ionization of calcium hydroxide follows:

The expression for solubility constant for this reaction follows:
![K_{sp}=[Ca^{2+}][OH^-]^2](https://tex.z-dn.net/?f=K_%7Bsp%7D%3D%5BCa%5E%7B2%2B%7D%5D%5BOH%5E-%5D%5E2)
Putting the values in above equation, we get:


Hence, the
for calcium hydroxide is 