After separating the acidic and neutral compounds in a mixture, how does one recover the neutral compound from the organic solution that it is in? O 1) Treat with HCl until acidic to precipitate the neutral compound as a solid. Heat the solution on a hot plate to evaporate the organic solvent and recover O 2) the neutral compound as a solid. 3) Wave a magic wand and speak the spell of recovery to get the neutral compound as a solid. 4) You don't need to recover the neutral compound as a soild, toss out the organic solution and clean up the lab.

Consider the following data on some weak acids and weak bases: name nitrous acid acid hydrofluoric acid 0.1 M NaF solution 0.1 M KNO₂ 0.1 M NH4CI 0.1 M C6H5NH3Br formula HNO₂ 4.5× 10 HF Ka X 6.8 × 10 -4 -4 PH Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' 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. choose one choose one choose one choose one S base Kb formula aniline C6H5NH₂ 4.3 x 107 -10 NH3 name ammonia 1.8 x 10 -5

Which solution below has the highest concentration of hydroxide ions? pH = 8.2 pH = 5.6 pH = 3.7 pH = 11.0 pH = 11

Complete the reactions below, briefly explaining in each case type of reaction taking place. i. Δ N-Ph ??? 1. Br2, NaOH ii. ??? 2. H+, H₂O + CHBг3 OH

Order these chemical species by increasing pH of an 0.1 M aqueous solution of each. That is, imagine making an 0.1 M solution of each species. Select 1 next to the species that makes the solution with the lowest pH. Select 2 next to the species that makes the solution with the next higher pH, and so on. Notice that some of the rankings have been filled in for you already. Also notice that water is on the list. For that particular case, just compare the pH of pure water to the pH of the other solutions. Note for advanced students: for all charged species, you may assume the necessary counterions act as neither acids nor bases. species + H₂O* HCIO2 HCOOH HCOO H₂O 2- SO 4 CIO₂ HSO4 relative pH of 0.1 M aqueous solution (Choose one) 3 (Choose one) ▼ 8 (highest) 5 (Choose one) (Choose one) 2 X Ś ? 000 Ar

Use the key below to answer questions 3a and 3b.                             HA                                          A-                                     H3O+      H2O     Draw a picture to represent the molecular view of the dissociation of HNO3 in water.                         Draw a picture to represent the molecular view of the dissociation of HC2H3O2 in water.

Consider the acid-base reaction below: (Question 14) Ca(HCO3)2 + Ca(OH)2 ----> Compound A + H2O (OR Ca(HCO3)2 + Ca left parenthesis OH right parenthesis 2 ----> Compound A + H2O) One of the single ions that is used to form compound A is ____. Assume enough of each compound is used to get a complete reaction. Question 14 answer choice options:   C32- (OR C3  2 minus)   C43- (OR C4  3 minus)   C3- (OR C 3 minus)   CO- (OR C O 1 minus)   CO2- (OR C O 2 minus)   CO43- (OR C O4 3 minus)   CO4- (OR C O4 1 minus)   C22-  (OR C2 2 minus)   CO32- (OR C O3 2 minus)   C4-  (OR C4  1 minus)   C2- (OR C 2 minus)   C33-  (OR C3  3 minus)   CO6- (OR C O 6 minus)   C23- (OR C2 3 minus)   C2- (OR C2  1 minus)   C- (OR C 1 minus)   C3- (OR C3  1 minus)…

Which one of these salts will form a neutral solution upon dissolving in water? None of the listed salts NH4NO3 KCN CH3COONA NaF Moving to another question will save this response. MacBook Air

Some coca cola products contain small amounts of (food grade) phosphoric acid. Why might the presence of this acid lead some people to identify coca cola as a helpful remedy for stomach aches?

8. Which of these two would you expect to be more soluble in water? Why? benzoic acid butanoic acid Which of these two would you expect to have the higher boiling point? Why? он Write “most" under the most basic compound. Write “least" under the least basic compound. NHz rN Hz - NHz -COC H3 -OCHS