Wednesday, June 9, 2010

If it takes 50 mL of 0.05M HCL to neutralize 345 mL of Mg(OH)2 solution, what is the concentration of the Mg(OH)2 solution?

First, write the unbalanced equation:



It is simple to balance it:



(give the coefficient to to balance at the right side, then give the coefficient to to balance and we are done).


Thus one mole of requires two moles of to be neutralized.


Next, there are   of    in   solution, therefore there are twice less moles of This gives the molarity (molar concentration) of to be equal to    This is the answer.

No comments:

Post a Comment

find square roots of -1+2i

We have to find the square root of i.e. We will find the square roots of the complex number of the form x+yi , where ...