Which compounds are Lewis acids? Select all that apply. □ N=C¯ AICI (CH,CH2)2HC+ NaHCO3

For each conjugate acid-base pair, identify the first species as an acid or a base and the second species as its conjugate acid or base. In addition, draw Lewis structures for each species, showing all valence electrons and any formal charge. (a) NH4+ NH3

Consider the following data on some weak acids and weak bases: acid base Ka name formula name formula HCH3CO2 1.8 × 10 C,H;NH, 4.3 × 10 5 10 acetic acid aniline hydrofluoric acid HF 6.8 x 10 ethylamine C2H;NH2| 6.4 x 10 Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. solution pH 0.1 М KF choose one 0.1 M C2H5NH3CI choose one 0.1 M NaCl choose one 0.1 M NaCH3CO2 choose one

Propylamine, C3 H7NH2, is a weak base. A 0.87 M aqueous solution of propylamine has a pH of 12.20. What is K, for propylamine? Calculate the pH of a 0.59 M aqueous solution of propylamine. K = pH Submit Answer Retry Entire Group 7 more group attempts remaining

Which is the stronger base, (CH3)3N or H2BO3− and why?

Which of the following acids is the strongest? РHз All of the acids are equal in strength. AsH3 SBH3

Which will be the stronger acid: propene (CH2=CHCH3) or propane (C3H8)? Explain by using resonance Lewis structures.

€ Draw the structure for the conjugate acid of the base shown. Be sure to include all lone pairs and formal charges (if applicable) on the structure. :Br: Br :☐ X 5

Draw the Lewis structure of aminomethanol (HOCH2NH2) and encircle all atoms that enable the molecule to act as Lewis base.

Trichloroacetic acid (CCl3COOH) is a corrosive acid that is used to precipitate proteins. The pH of a 0.050 M solution of trichloroacetic acid is the same as the pH of a 0.040 M HClO4 solution. Calculate Ka for trichloroacetic acid.