Question

The ph of a solution is 6. Its [h3o+] is decreased by 1000 times. Its ph will be:

Answer 1

It's pH will now be 9.

Answer 2

The pH will be 9.

Explanation:

The pH of the solution = 6

pH = - log [H+] = 6

Concentration of [H+] ion  = $10^{-6}$

ATQ, A decrease in concentration 1000 times

∵ The concentration of [H+] ion will become = $10^{-6} * 10^{-3}$

                                                                           = $10^{-9}$

pH of the resulting solution = - log  [H+]

                                              = - log [$10^{-9}$]

                                              = 9

Learn more: pH of the solution

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