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Trivia, Clicker Question Practice, Conjugate Pairs, Indicator Dye Usage

Trivia, Clicker Question Practice, Conjugate Pairs, Indicator Dye Usage. http://drschrempp.com/Tests/Prep%20Chem/acid_base_practice_test.htm UC Davis ChemWiki. Trivia. Acids taste sour and turn litmus paper red. Bases taste bitter, feel slippery, and turn litmus paper blue.

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Trivia, Clicker Question Practice, Conjugate Pairs, Indicator Dye Usage

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  1. Trivia,Clicker Question Practice,Conjugate Pairs,Indicator Dye Usage http://drschrempp.com/Tests/Prep%20Chem/acid_base_practice_test.htm UC Davis ChemWiki

  2. Trivia • Acids taste sour and turn litmus paper red. • Bases taste bitter, feel slippery, and turn litmus paper blue. • Amphoteric substances can act as both acids and bases!

  3. Trivia • Sulfuric acid is manufactured in the largest quantities. • Phosphuric acid is used in fertilizers, detergents, and as a flavoring in beverages. • Nitric acid is used mainly in the manufacture of explosives, rubber, plastics, dyes, and drugs. • Hydrochloric acid is produced in the stomach while bile is produced in the liver and stored in the gall bladder.

  4. What is the molarity of an HCl solution if 50.0 mL is neutralized in a titration by 40.0 mL of 0.400 M NaOH? • 0.200 M • 0.320 M • 0.280 M • 0.500 M • None of the above

  5. What is the molarity of an HCl solution if 125 mL is neutralized in a titration by 76.0 mL of 1.22 M KOH? • 0.371 M • 0.617 M • 0.455 M • 0.742 M • None of the above

  6. What is the molarity of an NaOH solution if 4.37 mL is titrated by 11.1 mL of 0.0904 M HNO3? • 0.230 M • 0.460 M • 0.355 M • 0.620 M • None of the above

  7. Which of the following is perchloric acid? • HClO • HClO3 • HClO2 • HClO4 • None of the above

  8. Which of the following is chloricacid? • HClO • HClO3 • HClO2 • HClO4 • None of the above

  9. What unknown quantity can be calculated after performing a titration? • Mass • Volume • Concentration • Density • None of the above

  10. Which quantity is directly measured in a titration? • Mass • Volume • Concentration • Density • None of the above

  11. Which of the following bases is the WEAKEST? The base is followed by its Kb value. • (CH3CH2)3N 5.2 × 10-4 • HOCH2CH2NH2 3.2 × 10-5 • NH3 1.8 × 10-5 • C5H5N 1.7 × 10-9 • CN- 2.0 × 10-1 Also, create stick diagrams for the organic molecules in answer choices 1 and 2.

  12. Conjugate Pair Examples

  13. Conjugate Pair Practice

  14. Conjugate Pair Solutions

  15. pH Indicators

  16. Pre-Lab Info • acetic (ethanoic) acid CH3COOH pKa = 4.75 • hydrochloric acid HClpKa = -4 • sodium hydroxide NaOHpKb = 0.2 Next, web search for a tutorial on how to use a buret to perform a titration. We *may* get digital pH meters in time, but learn how to use indicator dyes as a backup plan.

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