Question

How many milliliters (mL) of 1 M H₂SO₄ solution is required to neutralize 10 mL of 1 M NaOH solution?

1 point

2.5 mL


5.0 mL

10.0 mL

20.0 mL



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Answer 1

Answer:

How many ml of 1M H2SO4 is required to completely neutralize 2ml of 1M NaOH?

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7 Answers



Solomon Mundo

Answered June 22, 2017 · Author has 258 answers and 86.2K answer views

This is somewhat of a trick question. H2SO4 is a polyprotic acid and therefore has two dissociations that can potentially liberate H+:

H2SO4 → H+ + HSO4 Ka is so large that H2SO4 dissociates completely.

HSO4 → H+ + SO4- Ka is 0.012 (somewhat low)

It is generally taught for strong polyprotic acid solutions, like H2SO4, that are greater than or equal to 1 M then you only have to focus on the first dissociation:

H2SO4 → H+ + HSO4

Since H2SO4 completely dissociates to H+ and HSO4 then a 1 M H2SO4 solution will yield 1 M H+. So it will take 2 ml of a 1 M H2SO4 solution to neutralize 2 ml of a 1 M NaOH solution.

However, one could also calculate how much H+ will form from the second dissociation:

HSO4 → H+ + SO4-

1 M 0 M 0 M

-x +x +x

1-x x x

(x * x)/(1-x) = 0.012

Solving the quadratic gives x = [H+] = ~0.1 M

So the total [H+] = 1.1 M. Therefore, you would need ~1.82 ml 1 M H2SO4 to neutralize 2 ml of 1 M NaOH.

Answer 2

5 mL of 1 M H₂SO₄ solution is required to neutralize 10 mL of 1 M NaOH solution...

For more details refer to the attachment...

Hope this helped.....