Ch.6 - Chemical EquilibriumWorksheetSee all chapters
 Ch.1 - Chemical Measurements 2hrs & 10mins 0% complete Worksheet Ch.2 - Tools of the Trade 1hr & 26mins 0% complete Worksheet Ch.3 - Experimental Error 1hr & 51mins 0% complete Worksheet Ch.4 + 5 - Statistics, Quality Assurance and Calibration Methods 2hrs & 1min 0% complete Worksheet Ch.6 - Chemical Equilibrium 3hrs & 43mins 0% complete Worksheet Ch.7 - Activity and the Systematic Treatment of Equilibrium 1hr & 1min 0% complete Worksheet Ch.8 - Monoprotic Acid-Base Equilibria 1hr & 52mins 0% complete Worksheet Ch.9 - Polyprotic Acid-Base Equilibria 2hrs & 16mins 0% complete Worksheet Ch.10 - Acid-Base Titrations 2hrs & 22mins 0% complete Worksheet Ch.11 - EDTA Titrations 1hr & 37mins 0% complete Worksheet Ch.12 - Advanced Topics in Equilibrium 1hr & 18mins 0% complete Worksheet Ch.13 - Fundamentals of Electrochemistry 2hrs & 27mins 0% complete Worksheet Ch.14 - Electrodes and Potentiometry 55mins 0% complete Worksheet Ch.15 - Redox Titrations 1hr & 14mins 0% complete Worksheet Ch.16 - Electroanalytical Techniques 1hr & 23mins 0% complete Worksheet Ch.17 - Fundamentals of Spectrophotometry 55mins 0% complete Worksheet BONUS: Chemical Kinetics Not available yet

# The pH Scale

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The pH scale is useful in converting very small concentration values into more manageable numbers.

###### pH and pOH

Concept #1: With concentrations less than 1.0 M the pH scale normally ranges from 1 to 14.

Example #1: What is the hydroxide ion and hydronium ion concentration of a solution with a pH equal to 5.88?

###### pH and pOH Calculations

Example #2: Of the following options, a solution with which pH would have the greatest concentration of hydronium ions?

a) 4

b) 8

c) 11

d) 13

Example #3: What mass of HBr should a student mix into 250.00 mL of water to make a solution with a pH = 3.850?

a) 0.00286 g
b) 0.0547 g
c) 1.41 x 10-4 g
d) 0.0114 g
e) 2.87g