How many liters of 0.200 m sodium hydroxide do you need to titrate 0.400 l of a 0.100 m diprotic acid to the equivalence point? 0.400 l naoh

Explanation:

Since, the acid is diprotic, you have that 1 mol of it releases 2 mol of hydrogen ions, H⁺.

Determine the number of moles of acid, using the molarity definition:

And the number of moles of H⁺ ions equals 2 × 0.0400 mol = 0.0800 mol

At the equivalence point of the titration the number of moles of H⁺ from the acid equals the number of moles of OH⁻ from the base.

Since, sodium hydroxide ionizes in a ratio 1 : 1 (1 mol of NaOH / 1 mol OH⁻), the number of moles of NaOH is equal to 0.0800 mol

And now you use the molarity definition for the 0.200 M sodium hydroxide solution:

That is the 0.400 liter of 0.200 M sodium hydroxide.

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