Chemistry 2311 Homework: Chapter 3 - Acid Base Equilibria and Conjugate Acids and Bases - , Study notes of Organic Chemistry

Download Chemistry 2311 Homework: Chapter 3 - Acid Base Equilibria and Conjugate Acids and Bases - and more Study notes Organic Chemistry in PDF only on Docsity! Last Name _____________________ First Name _________________Roster # ______ No/incorrect roster number Chemistry 2311 Homework Problems- Chapter 3 No grade Use ChemBioDraw software to draw the requested structures within the red rectangles provided. Select and then copy the red rectangle for the question and paste it into the ChemBioDraw window. Draw the requested structures and then copy the rectangle and its contents in ChemBioDraw and paste them back into MS Word. Answer sheet to be printed out, one side of page only (only front side of pages will be graded). You may collaborate on the development of strategies to answer to these problems. HOWEVER, all work using must be completed independently of others. You cannot exchange electronic files with other students or cut-and-paste from other students. Violators of this instruction will receive a zero for the assignment and be referred to the Dean of Students for further sanction. 1. a) H N H H H O H+ conjugate acid conjugate base +H2O NH3 b) H3C N H Cl H H + conjugate acid conjugate base +H3C NH3 Cl 2. a) Methanol acting as a base H3C OH + + conjugate acid conjugate base H2SO4 H3C OH2+ HSO4- Any acid with a pKa smaller than that of CH3OH2+ (-2.5) will work b) Methanol acting as an acid H3C OH + + conjugate acid conjugate base NaH H2 Na+ + CH3O- Any base stronger than the conjugate base of methanol will work 3. Bases (from list) strong enough to deprotonate propanoic acid (so that K>1) aq. ammonia, aq. sodium hydroxide 3. Bases (from list) strong enough to deprotonate acetylene (so that K>1) none 3. Bases (from list) strong enough to deprotonate hydrochloric acid (so that K>1) all 3. Bases (from list) strong enough to deprotonate t-butanol (so that K>1) none 3. Bases (from list) strong enough to deprotonate diisopropyl amine (so that K>1) NaH 4 (a) Conjugate acid 4 (b) Conjugate base N O 5 (a) products of acid base equilibrium CH3NH3+ + CH3CO2- K will be >1 5 (b) products of acid base equilibrium HC≡CH + NH2- K will be <1 5 (c) products of acid base equilibrium CH3COCH2- + H2O K will be <1 5 (d) products of acid base equilibrium H2ONO2+ + HSO4- K will be >1