Anonymous asked in Science & MathematicsChemistry · 1 month ago

pH question?

Soap has 1000 times the concentration of hydrogen ions then an NaOH solution. 

If soap has a pH of 8, what is the pH of the NaOH solution?

Is it 0.008?

2 Answers

  • 1 month ago

    Because pH is a -log function, each pH unit corresponds to a change of 10 times. Because the soap has 1000X more H+ than the NaOH, the pH of the NaOH will 3 pH units HIGHER than the soap. So, 8 + 3 = 11. The pH of the NaOH solution is 11.

  • 1 month ago

    The number 1000 is 10^3. Notice the number “3” in there. The pH is 8 minus 3, which is 5.

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