Suppose ‘solution a’ has a ph of 3, ‘solution b’ has a ph of 7, and ‘solution c’ has a ph of 10. if solution b contains 10,000,000 h + ions in a given volume, how many ions will each of solution a and solution c have in equal volumes?

Explanation:

The definition of pH is pH = - log [H⁺], i.e.  pH is the negative of the base 10 logarithm of the conentration of H⁺ ions.

Since you have the number of H⁺ ions in the solution B and its pH, you can calculate the volume, V:

That is the same volume of the solutions A and C, so you can use the formula to calculate the pH of the solutions A and C.

Solution A:

Solution C:

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a corroding iron, if that's one of your choices