Question

A 106 m hcl solution is diluted to 100 times. The ph of the diluted solution would be

Answer 1

Answer:

A solution with pH 6 has concentration 10-6 M

If it is diluted 1000 times, it becomes 10-6/1000 = 10-9 M

Water has a pH = 7. Thus, [H3O+] in water = 10-7 M

Now, the [H3O+] in dilute acidic solution will approach 10-7 M. The concentration can not become less than 10-7 M due to dissociation of water to H3O+.

So, pH of resulting solution will be approx. 6.96.