10-6 M NaOH solutuion is diluted 100 times. Calculate the pH of the diluted base.
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its oh between 7 to 14
vishnu170:
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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.
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.
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