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A decrease of one unit on the pH scale means a solution is ten times more acidic. A decrease of two units means the solution is 100 times more acidic. How much more acidic is acid precipitation (pH = 4.0) than pure water (pH = 7.0)?

Respuesta :

If the pH is decreased 3 units, then it must be 10^3 = 1000

The pH is the negative logarithm of Hydrogen concentration in the solution. The solution at pH 4 is 1000 times more acidic than pure water (pH-7).

What is pH?

It is the negative logarithm of Hydrogen concentration in the solution. It is also known as the power of hydrogen.

[tex]\rm pH = -\rm log [H^+][/tex]

Change in pH is represented as the pH scale change in 1 unit change one unit, make a solution 10 times more acidic.

Here, change in pH:

pH = 7 - 4

pH = 3

So, the change in concentration will be [tex]10^3 [/tex] with is 1000 times more acidic than the pH 7.

Therefore, the solution at pH 4 is 1000 times more acidic than pure water (pH-7).

Learn more about pH:

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