Question

find the pH of 0.01 molar hno3​

Answer 1

Answer:

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Answer 2

pH = 2

Explanation:

The important thing to keep in mind when dealing with strong acids is that they dissociate completely in aqueous solution to form hydronium ions,  

H 3 O + , and their conjugate base.

Complete dissociation means that every molecule of acid will ionize, i.e. donate its acidic proton to a water molecule.  

That tells you that a strong monoprotic acid will produce hydronium ions in a  1 : 1  mole ratio, that is, every mole of acid will produce one mole of hydronium ions.

In this case, nitric acid will dissociate to form

HNO

3(aq] + H 2 O (l] → H 3 O + (aq] + NO − 3(aq]

This means that the concentration of hydronium ions will be equal to that of the nitric acid

[ H 3 O + ] = [ HNO 3 ] = 0.01 M  

As you know, a solution's pH is simply a measure of its concentration of hydronium ions

pH = − log ( [ H 3 O + ] )  

In this case, the pH of the solution will be-

pH = − log ( 0.01 ) = 2

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