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Concentration of 10 mL NaOH solution required to raise pH from 2.3 to 12

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rwooduk1:
I have a copper (II) sulphate, lactic acid, nitric acid solution (100 mL) with pH 2.3. I want to get this solution to pH 12, but I don't want to significantly increase the amount of solution. If say, I wanted to use 10 mL of NaOH to raise the pH to pH 12 what concentration NaOH would I need? I'm assuming the concentration would need to be extremely high, would the amount of NaOH needed even dissolve in 10 mL of DI? Is there a simple way to make this calculation?

If someone could point me in the right direction it would be appreciated.

chenbeier:
Because of this mixture it is better to know the amounts of the acids and the copper sulfate. These you have to neutralize first and additionally to calculate how much NaOH correspond to pH 12.

jeffmoonchop:
Its highly soluble, try adding a drop of 1N and check pH, if no real change add a drop of 5N and so on.

rwooduk1:
Thank you for the replies.

Copper sulfate 0.15 M, lactic acid 3 M and 10% nitric acid.

As suggested, I will simply trial and test with higher concs of NaOH.

Thanks again.

AWK:
Your information is not reliable (pH=2.3). 10 % nitric acid shows a pH slightly below 0.

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