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Exam (elaborations)

pH preparation study questions and correct answers GRADED A+

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pH preparation study questions and correct answers GRADED A+ pH preparation study questions and correct answers GRADED A+ pH preparation study questions and correct answers GRADED A+ pH preparation study questions and correct answers GRADED A+ pH preparation study questions and correct answers GRADED A+ pH preparation study questions and correct answers GRADED A+

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PH - Professional Hydrologist

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PH PREPARATION
STUDY QUESTIONS AND
CORRECT ANSWERS
GRADED A+ 2025-2026
pH - ANS--this scale is called the power of hydrogen
-Sorenson developed this scale to manage the wide range of hydrogen ion
concentrations in acids and bases
-calculated as the negative exponent of hydrogen ion concentration to the base 10
-produces a logarithmic scale from 0 to 14 where pH is represented as a positive
number


neutral - ANS--a solution with a pH of 7 is neutral
-represents [H+] = 1 x 10^-7 mol/L


acidic - ANS--solution with pH of 0-7 is acidic

-represents [H+] = 1mol/L to 1 x 10 ^-7 mol/L


basic - ANS--solution with a pH of 7-14 is basic
-represents [H+] = 1 x 10 ^-7 to 1 x 10 ^-14 mol/L


logarithmic scale - ANS--logarithmic scale means that 1 unit change in pH is 10-fold
change in [H+]
ex: solution with pH 4 contains 10x10x10 or 1000x more H+ than solutions with pH 7


calculating pH - ANS-pH = -log (H+)
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