Ethyl butyrate. CH3CH2 CH2C02CH2CH3 , is an artificial fruit flavor commonly use

Question

Ethyl butyrate. CH3CH2 CH2C02CH2CH3 , is an artificial fruit flavor commonly used in the food industry for such flavors as orange and pineapple. Its fragrance and taste are often associated with fresh orange juice, and thus it is most commonly used as orange flavoring. It can be produced by the reaction of butanoic acid with ethanol in the presence of an acid catalyst (H+): Given 7.20g of butanoic acid and excess ethanol, how many grams of ethyl butyrate would be synthesized, assuming a complete 100% yield? Express your answer in grams to three significant figures. A chemist ran the reaction and obtained 5.05g of ethyl butyrate. What was the percent yield? Express your answer as a percent to three significant figures. The chemist discovers a more efficient catalyst that can produce ethyl butyrate with a 78.0% yield. How many grams would be produced from 7.20g of butanoic acid and excess ethanol? Express your answer in grams to three significant figures.

Explanation / Answer

1.mols of acid = 0.0817 mols

yield = 116.16*0.0817 gm = 9.492 gm

2.

percent yield = (5.05/yield)*100% = 53.20 %

3

the efficient yield = 0.78* yield = 7.403 gm

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