Question

On a 10-fold dilution of a strong acid, the ph will

Answer 1

Answer:
             On a 10-fold dilution of a strong acid, the pH will increase.

Proof:

Lets take initial concentration of Acid as 10 M, So, as

                                             pH  =  - log [H⁺]

Putting value of [H⁺]

                                             pH  =  - log (10)

                                             pH  =  -1

After 10 fold Dilution, the concentration iwill be 1 M, So,


                                             pH  =  - log [H⁺]

Putting value of [H⁺]

                                             pH  =  - log (1)

                                             pH  =  0

So, with 10 fold dilution the pH increases.