When a 10.00 ml sample of a hydrochloric acid is titrated, 22.50 ml of 0.250 m naoh solution is required to reach the end point. what is the acid concentration in moles per liter.

First, we write the reaction equation between hydrochloric acid sodium hydroxide.
HCl + NaOH → NaCl + H₂O

From this, we can see that the molar ratio between HCl and NaOH is 1 : 1.
We also know that:
Moles = concentration * volume

Therefore, we may equate the produce of each substance's concentration and volume:

M₁V₁ = M₂V₂
M₁ = (0.25 * 22.5)/10
M₁ = 0.56 M

The hydrochloric acid is 0.56 moles per liter.

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