HN NH insoluble irn reaction mixture soluble in reaction mixture 1. Write a bala
ID: 1052735 • Letter: H
Question
HN NH insoluble irn reaction mixture soluble in reaction mixture 1. Write a balanced chemical equation for the reaction you performed in week 1. Represent the racemic DACH starting material by drawing both enantiomers. Be sure to include stereochemistry on all structures and assign all chiral centers (R) or (S). Note that it is assumed that RR-DACH:L-tartrate precipitates while the SS-DACH remains in solution. 2. List the masses of ()-DACH and L-tartaric acid that you used in the reaction and calculate the number of moles of each. Identify the limiting reagent, and determine the theoretical yield of (R,R)-DACH:L-tartrate. In determining the limiting reagent and percent yield, you can assume that all of the L-tartrate precipitates as (R,R)-DACH:L-tartrate from the reaction. Show your work on the right of the page with units. All of these calculations should be in your laboratory notebook mol 14.19 I i 197 o.olooomol Mass of (±)-DACH used: Moles of(DACH used: mo N Mass of L-tartaric acid used: SI95150 Moles of L-tartaric acid used:0.0500 H mo Limiting reagent:artarie acid Theoretical yield of (R,R)-DACH:L-tartrate (in moles): Theoretical yield of (R,R)-DACH:L-tartrate (in g):Explanation / Answer
From the given set of data and the literature values
Molar mass of DACH-L tartartate = 264.28 g
Theoretical moles of product formed = 0.005 mols
Theoretical yield of product in grams = 0.005 x 264.28
= 1.32 g
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