To the right are possible chemical species (structures/formulas and names given)

Question

To the right are possible chemical species (structures/formulas and names given) that might be present during the Project 8A experiment. Each is identified with a NUMBER li. through 6.) Answer Questions 1 3 below, using ONLY the NUMBERS. Question 1 (4 pl t the very beginning of Step 8 in the Project 8A procedure you will have two layers: an upper ess dense) and a lower 1. NaHCO Sodium Bicarbonate (solution) (more dense ayer as schematized in the diagram below. On the diagram below write-in the NUMBER of the chemical species that will 2. Hexane predominate in each layer at the beginning of Step 8. Top Layer Aspirin ASA Bottom Layer Aspirinate (ASA) conjugate base of ASA Question 2 (1 p) Just before you add the first 1 mL of 3M HCN n Step CH H3C 12 in the Project 8A procedure which of the chemical species on the right will predominate in the 50 mL beaker? CH Protonated Caffeine Question 3 (1 pl At the conclusion of Step 12 in the Project 8A 6. Conjugate acid of Cofreiner procedure which of the chemical species onthe right will predominate he 50 ml L beaker? n

Explanation / Answer

At the conclusion of step 4 in the Project 8A procedure you will have two layers: an upperhexane and a lower alkaline aqueous layer as schematzed in the diagram below. On the diagram below write-inthe NUMBER of the chemical species that willpredominaTein each layer at the end of step 4

Hexane: 2. Cafeine

0.4 M Sodium Bicarbonate: 3. Aspirinate

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