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Class Discussion (5 pts)
https://phet.colorado.edu/sims/html/ph-scale-basics/latest/ph-scale-basics_en.html
*Acidic, neutral, and basic pH values
*How dilution affects the pH of acids/bases
*Other general concepts dealing with the simulation (e.g. whether a substance is acidic, basic, or neutral; how altering variables influences pH; etc.)
NOT IN SIMULATION
*How do edible acids usually taste? Edible bases?
*Is sodium hydroxide an acid or a base? What is its chemical formula?
*Is baking soda an acid or a base? What is its chemical formula?
*Is vinegar an acid or a base? What is its chemical formula?
*Do strong acids dissociate partially or completely? Weak acids?
*Do strong bases dissociate partially or completely? Weak bases?
*Which element is always found in an acid's chemical formula?
Read this article before completing any labs involving acids and bases.
https://www.verywellhealth.com/chemical-burns-symptoms-causes-diagnosis-treatment-4174243
Calculation Questions
1)Determine the pH of a solution where [H+] = 2.5 x 10-5 M.
Answer = 4.6
2)Determine the pH of 0.005 M hydrochloric acid solution.
Answer = 2
3)Determine the pH of a solution where [OH-] = 3.5 x 10-6 M.
Answer = 8.5
4)Determine the pH of a 0.040 M sodium hydroxide solution.
Answer = 12.6
5)Determine the pH of a solution where the concentration of the hydrogen cation is equal to 0.0014 M.
Answer = 2.9
6)Determine the pH of a solution where the concentration of the hydroxide anion is equal to 5.55 x 10-7 M.
Answer = 7.41
7)Determine the [H+] of a solution with a pH of 2.
Answer = 0.01 M
8)Determine the [H+] of a solution with a pH of 7.3.
Answer = 5.0 x 10-8 M
9)Determine the pH of a 0.41 M solution of HNO3.
Answer = 0.39
10)Determine the pH of a 4 x 10-3 M solution of Ca(OH)2.
Answer = 12
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Ch. 16 Quiz - includes (but is not limited to) Lessons 84-86 and pH Calculations
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