chap3.pdf - Chapter 3 MULTIPLE CHOICE QUESTIONS Part 3...

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Chapter 3 MULTIPLE CHOICE QUESTIONS Part 3: Syror och baser (Answers on page 18) Topic: Acid-Base Definitions 1. According to the Lewis definition, a base is a(n): A) Proton donor. B) Electron pair donor. C) Hydroxide ion donor. D) Hydrogen ion donor. E) Electron pair acceptor. 2. Which of the following is not both a Bronsted-Lowry acid and a Bronsted-Lowry base? 4 ! 2 PO 3 3. Which of the following is not a conjugate acid - conjugate base pair (in that order)? , H , BF CH OH, CH O + O HPO 4. The conjugate base of sulfuric acid is: SO 5. Consider the equilibrium. Which are the Bronsted-Lowry bases? 3- + H 2- + HO - A) PO and HPO B) PO and OH C) PO and H D) H O and OH E) H O and HPO 6. Which of these is not a true statement? 7. For the equilibrium NH + H O & CH + the two substances which both are acids are: O and H + and CH 8. Which of the following is not a Lewis base? O C 9. Which of the following is not a Bronsted-Lowry acid? B) (CH ) N C) NH D) CH CO H E) HC " CH 10. The reaction between which combination of substances below cannot be classified as a Bronsted-Lowry acid-base reaction? Li + C 5 OH + CH Na + NH + CH
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Chapter 3 Topic: Acid-Base Definitions 11. Which of these is not a Lewis acid? 3 O + 4 H 10 12. This species is a carbon-based Lewis acid: CH ! · 13. What is the conjugate base of ethanol? 2 B) CH OH D) CH E) CH OCH 14. Which of the acids below would have the strongest conjugate base? OH pK a = 18 CO H pK = 4.75 = 2.81 CHCO = 1.29 CCO = 0.66 15. Which of the following is a Lewis acid? " N Topic: Acid-Base Reactions 16. Adding sodium hydride to ethanol would produce: + H Na + NaOH + NaOH + NaOH ONa + H 17. Adding sodium amide (NaNH ) to 1-butyne (CH C&CH) would produce: C&CNa + NH C&C-C&CH + NaH + NH C&CNH + NaH D) NaCH C&CH + NH CH(Na)C&CH + NH 18. Which acid-base reaction would not take place as written? Li + CH OH ####$ + CH OLi CH + NaOH HC CNa + H O O CH + NaOH OH + NaH H + CH ONa Na + CH OH 19. Which acid-base reaction would not NH NHLi C CH + NaOCH CNa + CH OH + NaNH ONa + NH 20. Which acid-base reaction would not C=CH + NaOH C=CHNa + H C&CNa + H C&CH + NaOH ) CHOH + NaH (CH CHONa + H
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Chapter 3 5 Topic: Acid-Base Reactions 21. The amide ion, NH 2 ! , is a base which can be used only in which of the solvents shown below: 3 OH CH O 22. Acetic acid dissociates most completely in: A) CCl 4 B) Cl C=CCl D) (CH ) E) the gas phase. 23. Which pair of species are both bases in the following reaction? HCN and H O & H O + and CN O and CN and H O 24. What compounds are produced when sodium nitrate is added to a mixture of water and ethanol? + NaOH + CH ONa OCH 25. Which reaction of these potential acids and bases does not
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