Question

Isopop) Pre-Lab Assignment: According to the nutritional label, the dyes in Grape Kool Aid are Red-40 and Blue-1. • Draw Lewis Dot Diagrams for Red-40, and Blue-1. (Abbreviated structural diagrams for the dyes are acceptable. Cite sources!) • Draw Lewis Dot Diagrams for each solvent: isopropyl alcohol, water, ethanol, and acetone. Label the intermolecular forces present in each molecule. Based on the structures, develop a CLAIM for each experiment: • For the paper chromatography portion, your claim will involve relative Rr values of the dyes, for each solvent choice. (R, for Blue-1 will be greater/less than R, for Red-40 in isopropyl alcohol because...) For the liquid chromatography portion, your claim will involve which dye will elute with each solvent. (Red-40/Blue-1 will elute with the 5% isopropyl alcohol solvent because...) Procedure: Part 1: Paper Chromatography 1. Prepare a concentrated solution of grape Kool-Aid® by mixing 2 g of Kool-Aid® powder with 5 ml of

Answer 1

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