Question

Is a difference of 1 pH unit a “big difference” in terms of the concentration of H3O+ in solution? Explain.

Answer 1

Yes

It is a 10X increase or decrease in concentration

Explanation:

A difference of 1pH unit a significant difference in terms of the concentration of hydroxonium ions in solution.

The pH scale is a convenient scale for expressing the level of acidity or alkalinity of aqueous solutions.

The pH of a solution is a negative logarithm to base 10 of the hydrogen ion concentration of the solution.

     pH = -log₁₀  H⁺

     pOH = -log₁₀ OH⁻

From the expressions above, we know that a pH scale ranges from 1 through 14.

 Since we are dealing with a logarithm to the base of 10,

  we know that log₁₀10 = 1

                          log₁₀100 = 2

 As we can see we have 10 times increase in concentration of the amount of hydroxonium ion in solution.

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