Map pling The following reaction represents the process of making soap from cano

Question

Map pling The following reaction represents the process of making soap from canola oil by base hydrolysis of the triglycerides (fat) in the oil. CH2 CH2 -CH3 CH2-OH O CH2 CH3 +3NaOH 3 Na CH2-OH sodium carboxylate salt (soap) fat (triglyceride in canola oil) glycerol Use the molecular structures shown above to calculate the theoretical soap molecule yield for a reaction that uses 0.130 moles of fat and 0.426 moles of NaOH. Number Theoretical Yield of Soap Molecules What is the percent yield if 82.19 grams of soap were actually produced from this reaction? Number Percent Yield for Soap Reaction

Explanation / Answer

Here , fat is the limiting reagent . SO, the production of soap will be depend on fat.

[ fat has 0.130 mole & NaOH has 0.426 mole. they are reacting in 1:30 ratio. So, 0.426 mole of NaOH can react with 0.426 / 3 = 0.142 mole of fat. But the mole of fat present is less than that . So, fat will be the limiting reagent.]

From the given equation we can see that , from 1 mole of fat , 3 mole of soap can be formed.

So, from 0.130 mole of fat , 0.130X3 = 0.39 mole of soap can be formed.

1 mole of Soap = 306 g . So, 0.39 mole of sopap = 0.39 X 306 g = 119.34 g   ( First answer )

This is the theoretical yield. = 119.34 g

Actual yield = 82.19 g

Percentage yield = (Actual yield / theoretical yield )X100 % = 68.87 % ( Second Answer )

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