5. Relating to the molecule below (a) Indicate whether nitrogens A, B, C & D, are basic or non-basic (place an X in the selected box) B B H₂N C NH, D D Basic Non-Basic

Use Table 13-2 to order the following from the strongest to the weakest acid. HClO2,H2O,NH4+,HClO4

Complete a net ionic equation for each proton-transfer reaction using curved arrows to show the flow of electron pairs in each reaction. In addition, write Lewis structures for all starting materials and products. Label the original acid and its conjugate base; label the original base and its conjugate acid. If you are uncertain about which substance in each equation is the proton donor, refer to Table 4.1 for the relative strengths of proton acids. (a) NH3+HCl (b) CH3CH2O+HCl (c) HCO3+OH (d) CH3COO+NH4+

2. Which is the most acidic hydrogen in the following compound? Provide a brief explanation. H H H. H, II IV +H `H.

QUESTION 4 your choice. .ank the following compounds below In terms of acidity and explain CF3CH2OH 요요 CH3CO₂H A B C D

H2S+H2O H3O+ + HS- Which specie is the conjugate acid?

3) а) decreasing acidity and explain your answer. CHCHNΗ Arrange the following compounds in order of CH,CH,OH CH,CH,CH, b) part (a) in order of increasing basicity and explain your Arrange the conjugate bases of the acids given in answer.

14. Circle the most acidic compound in each of the following pairs. Explain your choice by describing the relevant factors for stabilizing the conjugate base. (a) (b) CO₂H OH H3CO CO,H AA NH₂

3. Arrange the following compounds in terms of their basicity (Strongest base first, weakest base last). CH;NHNA CH;ONa CH;OH HCO,Na

Rank the following compounds in order of increasing acidity, and explain your ranking. Br E A A COOH O₂N B COOH (least acidic) < с (most acidic) COOH The strongest acid has a strong electron-withdrawing group base. The weakest acid has a strong electron-donating group H₂C that will D B COOH destabilize that will stabilize the E .COOH Dositive D charge in its conjugate the negative charge in its A