Question

Problem 4A should read "The Kb for HSO4- is less than that of SO42-..."

1. (3 pts) in the chemical reaction (CH3)3N(g) + BF3(g) = (CH3)3NBF3(s), BF3 acts as a Lewis because it a. acid; accepts electrons b. base; accepts electrons C. acid; donates electrons d. base; donates electrons 2. (3 pts) of the following, which is the strongest acid? a. H2O b. H2S C. H Se d. The acid strength of all of the above is the same. 3. (3 pts) Which of the following acids has the highest pk? a. CBr3COOH b. CCI3COOH C. CF3COOH d. CH3COOH 4. The following data were collected for a series of ions: Кь Compound SO? HSO4 19.8 x 10-13 -10-17 A. (3 pts) The Kb for HSO4 is greater than that of S042. because a. Extra negative charge makes SO42- a stronger base b. The conjugate acid of HSO4 is stronger than the conjugate acid of SO42- C. SO42-has more resonance structures and is more stable than HS04 d. All of the above B. (3 pts) The Kb for HSO3 would be expected to be than the Ko for HSO4 because a. less than; the Ka for H2SO3 is greater than the Ka for H2SO4 b. less than; the Ka for H2SO4 is greater than the Ka for H2SO3 C. greater than; the Ka for H2SO3 is greater than the ka for H2SO4 d. greater than; the Ka for H2SO4 is greater than the Ka for H2SO3

Please solve and provide correct multiple choice. Thanks

Answer 1

W V2 0 (CH3)Ni + BF ₃ (CH) NBF3 Lewis Lewis bases e- & donor and se acceptos accepts i Bf Lewis mid has it Na acid, accepts elections ws se is larger than s & sa larger than or at Huse kind is longest of hence weaker than 4-5. Hi se is strongest and of all- o H. Se

Date pka - log kind his highest ka hence lowest pka f is more electronegative than cl - which is more electronegative than a Br. Acidike increases with increase in negativ 1 halogen. Due to -I ellect. F with draws more ľ to IT of 0-4 bond towards d, making o-u bond weaken. CF coon is strongest and electron Frk. con cf coon has dargest boka this has smallest ka Ch is CH cool is weakest- hance largest pka. Chh coon. seid - 6 d All of above

Date - Hy sou is stronger and than Thas H₂ 303 lower of shinger and is weaker As conjugate base - 450,- is weaker Kb of Hisoy is of shringer and base than smaller than H30 that of no To greater than , ko than Kol for 1504 Jos H, 50₂ is greater

Date - Hy sou is stronger and than Thas H₂ 303 lower of shinger and is weaker As conjugate base - 450,- is weaker Kb of Hisoy is of shringer and base than smaller than H30 that of no To greater than , ko than Kol for 1504 Jos H, 50₂ is greater