Homework Help: Chemistry

Posted by Cynthia on Wednesday, March 7, 2012 at 3:56pm.

Determine the molarity of a sodium hydroxide solution? if 37.34 mL of it are required to neutralize 1.922 g of citric acid.
balanced equation- 3NaOH(aq)+H3C6H5O7-->3H2O(l)+NaC6H5O7(aq…
***Plesae show steps.

Chemistry - DrBob222, Wednesday, March 7, 2012 at 5:40pm
You made a typo in the equation. It should be Na3C6H5O7(aq) on the right.

moles citric acid = grams/molar mass
Convert moles citric acid to moles NaOH. From the equation you can see that 3 moles NaOH = 1 mol citric acid; therefore, mols NaOH = 3 x moles citric acid.

Then M NaOH = moles NaOH/L NaOH

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