(a) CH31/KOH OH MeOH OCH 3 (b) MeOH H2SO4 (conc.) (B-naphthol methyl ether)

a) If the pH value of an aqueous solution of trimethylamine [(CH3) 3N] is 10.75, what should be the molarity of this solution? (CH3) 3N + H2O ↔ (CH3) 3NH + + OH-, Kb = 6.3 × 10-5 b) What will be the pH of the solution prepared by dissolving 8.35 g of aniline hydrochloride (C6H5NH3 + Cl-) in 750 mL of 0.215 M aniline (C6H5NH2)? Is this solution an effective buffer? Explain (Kb = 7.4 × 10-10 for aniline, C: 12.0 g / mol, H: 1.0 g / mol, N: 14.0 g / mol, Cl: 35.4 g / mol) .

a) If the pH value of an aqueous solution of trimethylamine [(CH3)3N] is 10.75, what should be the molarity of this solution? (CH3)3N + H2O ↔ (CH3)3NH+ + OH-, Kb = 6,3 × 10-5 b) What will be the pH of the solution prepared by dissolving 8.35 g of aniline hydrochloride (C6H5NH3+Cl-) in 750 mL of 0.215 M aniline (C6H5NH2)? Is this solution an effective buffer? Explain (Kb = 7,4 × 10-10 for aniline, C: 12.0 g / mol, H: 1.0 g / mol, N: 14.0 g / mol, Cl: 35.4 g / mol) .

(a) Is the compound CH3CH≡CH2 saturated or unsaturated?Explain. (b) What is wrong with the formulaCH3CH2CH≡CH3?

Draw structural formulas for the following the compounds:    (a) Cis-1,3-diphenylcyclohexane             (b) 5-phenylpentanoic acid   (c) 3,4-dibromo-N,N-dimethylaniline

Which of the following chemical tests CANNOT be used to distinguish the two compounds? (A) Br2/H2O (b) FeCl3 test (C) Tollen's test (D) hot, acidic KMnO4

Draw the structures of the following compounds:(a) tert-butylamine

For cis-1,3-diethylcyciobutane, draw (a) a stereoisomer; (b) a constitutional isomer.

(d) CH3 CH3 (е) HCI HCI Ether Ether

Explain the structural formula for (C) (B) (A) in the following reaction: