How many milliliters of a 0.40 m solution of hydrochloric acid are necessary to neutralize 25 ml of a 0.20 m sodium hydroxide solution?

a. 12.5 ml
b. 50 ml
c. 10.5 ml
d. 25 ml
e. 20 ml

Explanation:

1) Chemical equation:

This is the neutralization of a strong acid (HCl) and a strong base (NaOH), which is ruled by this equation:

2) Mole ratio:

3) Number of moles of NaOH

4) Number of moles of HCl:

5) Volume solution HCl:

Conclusion: 12.5 ml of a 0.40 M solution of HCl are necessary to neutralize 25 ml of a 0.20 M NaOH solution.

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explanation:

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