Question

A solution has ph =3. it is diluted 100 times what is ph of the solution after dilution.

Answer 1

Explanation:

10 power -5.........

is the answer ......

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Answer 2

Given:

pH of solution = 3

Solution diluted 100 times

To find:

pH of solution after 100 times dilution = ?

Formula to be used:

pH = -log[$H^+$]

Calculation:

From the initial pH, the solution is identified as acid.

As pH = 3, it means [$H^+$] = $10^-3 = 1\times10^-3$M

After 100 times dilution, the concentration of the solution is:

[$H^+$] = $\frac{1\times 10^{-3}}{100}= 1\times 10^{-5}$

Therefore pH of 100 times diluted solution is

pH = -log[$H^+$]

pH = - log[$1\times 10^{-5}$]

pH = 5.

Conclusion:

The pH of solution with 3, gets changed to 5 after 100 times of dilution.

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