Question

4. Consider phosphonic acid, an inorganic acid that has both the empirical and molecular formua HaPOs... a. (4 pts) Draw the most stable Lewis electron dot structure for HaPOs containing one double bond and no formal charges. Place your answer in the space provided. HaPOs with one double bond b. (3 pts) What is the orbital hybridization at phosphorus in your answer to part (a)? (4 pts) Draw the most stable Lewis electron dot structure for HaPOs containing no double bonds and no formal charges. Place your answer in the space provided. c. HaPOs with no double bonds d. (3 pts) What is the 20-P-O bond angle at phosphorus in your answer to part (c)?

Answer 1

4' a. Lewis electron dot structure of H3 Poą es OL H3 P03 .b. Oarbital Hybridization of H3PO3 P-atom - sp3 Hybere dezation Үсон OH o Lewis electron dot structure H3poz no double bond. VO # OH OH

- What is the Loop-o Bond angle Nearly 109.5" Small destorted. @ Strongest Boronsted - Loway Acd. HC H BY HIS Alwern = HI 95 strongest boonsted-loway . aad (b) Has the lowest pka. CAZ MH3 H₂o H₂S . pka 15 H₂S has lowest pla value Answer: ska - H25= 7. HH nga scono nos acerc Hydrogen Because congugate bose 97 Mone Stable b. HVA HAH are thos h H H most acedic. Hydrogen Recause conjugate base it more Stable

8. Electronegativity X pola ? Zability polarizability is the ability to form instantane- ous depoles Electronegativity is the property of an atom which increases with ets tendency to attract : the electrons of a bond. H— F FPS more electronegtive atom. H - BY ASES Br 15 rore polarizableatom. 9, CF CQH plc Q=0.23 CH₂ COLH pka = 4.75 Trifluoro acedic Aad 95 More Acedie Than Acedic acid, Because conjugate base of CF3COOC 95 more stable CF3 COOH - to CF3-4000 more stable CH3-cos less stable ch Cao + More Acedic Hydrogens having lest pka valug because ka a Pka