Environmental / Chemical Engineering Problem Help

Use this constant, along with the concentration of hydroxyl ions and the temperature, to calculate the concentration of magnesium ion remaining in solution. The answer is 0.1367 mg/L, which can be found by plugging in the given values into the equilibrium expression and solving for the unknown concentration.
  • #1
ride5150
26
0
I have a environmental engineering problem to do for homework, it goes like this:

How many mg/L of magnesium ion will remain in solution in water that is 0.001000 M in hydroxyl ion and at 25 degrees celsius?

the answer is 0.1367 mg/L, but i don't know how it was found.

to be honest I am not even sure where to begin, for some reason i can't find the section in my book that deals with problems like this. if anyone could point me in the right direction id greatly appreciate it, or maybe tell me what topic i should look under in my book.

thank you
 
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  • #2
Look up the equilibrium constant for the dissociation of magnesium hydroxide in aqueous solution.
 

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