# A 4.0 M solution of Mg(OH)2 is completely neutralized 160 mL of a 1.0 M solution of HCl. How many milliliters of magnesium hydroxide were required?

##### 2 Answers

The question is not legitimate. The solubility of magnesium hydroxide in water is approx.

#### Explanation:

Of course we can interrogate the molar quantity with respect to hydrochloric acid....

We gots...

And this molar quantity will react with HALF an EQUIVALENT with respect to magnesium hydroxide according to the following equation...

Note that I answered the question I wanted to, and not the question you asked, but magnesium hydroxide is not so soluble in aqueous solution. The question should be reformed....

20 milliliters

#### Explanation:

The first step is to find out how many moles of

Using the concentration formula:

c= concentration in

n= number of moles

v= volume in liters.

Thus we find out that the

n=0.16 mol

So we used 0.16 mol of

As this is a reaction with a strong base and a strong acid (presumably as a hydroxide can be considered strong) The reaction goes to completion.

We know that

Going back to the original equation we can thus find the volume of the Magnesium hydroxide, as we know the concentration from the question.