Question

The pH of HCl solution is 3. Calculate the strength of HCl in terms of molarity​

Answer 1

Answer:

The pH of an aqueous solution is given by the equation,

pH=−log[H+]

[H+] is the hydrogen ion concentration in terms of molarity

The dissociation equation for hydrochloric acid is:

HCl(aq)→H+(aq)+Cl−(aq)

So, one mole of hydrochloric acid contains one mole of hydrogen ions.

Therefore, the hydrogen ion concentration will be,

3=−log[H+]

[H+]=10−³M

= 0.001 M

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Answer 2

Answer:

0.001 will be the correct answer