The structural formula for the hemiacetal and then acetal formed in the given reaction has to be drawn. Concept Introduction: The structural formula of a compound shows how the atoms are arranged in a molecule and, in particular, shows which functional groups are present. Hydrocarbon compound which contain a hydroxyl group and an alkoxy group is known as Hemiacetals. Hemiacetal can be prepared by the addition of alcohol to an aldehyde or ketone in the presence of an acid catalyst. Hemiacetals react with a second alcohol molecule to produce an acetal, which contains a carbon with two alkoxy groups –OR.

Question

Ethyl butyrate, CH3CH2CH2CO2CH2CH3CH3CH2CH2CO2CH2CH3, 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+H+): CH3CH2CH2CO2H(l)+CH2CH3OH(l)H+⟶CH3CH2CH2CO2CH2CH3(l)+H2O(l) Given 8.45 gg 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 5.50 gg 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 8.45 gg of butanoic acid and excess…

Answer 1

Question

Chapter 16, Problem 16.30P

(a)

Interpretation Introduction

Interpretation:

The structural formula for the hemiacetal and then acetal formed in the given reaction has to be drawn.

Concept Introduction:

The structural formula of a compound shows how the atoms are arranged in a molecule and, in particular, shows which functional groups are present.

Hydrocarbon compound which contain a hydroxyl group and an alkoxy group is known as Hemiacetals. Hemiacetal can be prepared by the addition of alcohol to an aldehyde or ketone in the presence of an acid catalyst. Hemiacetals react with a second alcohol molecule to produce an acetal, which contains a carbon with two alkoxy groups –OR.

(b)

Interpretation Introduction

Interpretation:

The structural formula for the hemiacetal and then acetal formed in the given reaction has to be drawn.

Concept Introduction:

The structural formula of a compound shows how the atoms are arranged in a molecule and, in particular, shows which functional groups are present.

Hydrocarbon compound which contain a hydroxyl group and an alkoxy group is known as Hemiacetals. Hemiacetal can be prepared by the addition of alcohol to an aldehyde or ketone in the presence of an acid catalyst. Hemiacetals react with a second alcohol molecule to produce an acetal, which contains a carbon with two alkoxy groups –OR.

(c)

Interpretation Introduction

Interpretation:

The structural formula for the hemiacetal and then acetal formed in the given reaction has to be drawn.

Concept Introduction:

The structural formula of a compound shows how the atoms are arranged in a molecule and, in particular, shows which functional groups are present.

Hydrocarbon compound which contain a hydroxyl group and an alkoxy group is known as Hemiacetals. Hemiacetal can be prepared by the addition of alcohol to an aldehyde or ketone in the presence of an acid catalyst. Hemiacetals react with a second alcohol molecule to produce an acetal, which contains a carbon with two alkoxy groups –OR.

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Ethyl butyrate, CH3CH2CH2CO2CH2CH3CH3CH2CH2CO2CH2CH3, 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+H+): CH3CH2CH2CO2H(l)+CH2CH3OH(l)H+⟶CH3CH2CH2CO2CH2CH3(l)+H2O(l) Given 8.45 gg 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 5.50 gg 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 8.45 gg of butanoic acid and excess…

Ethyl butyrate, CH3CH2CH2CO2CH2CH3CH3CH2CH2CO2CH2CH3, 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+H+): CH3CH2CH2CO2H(l)+CH2CH3OH(l)H+⟶CH3CH2CH2CO2CH2CH3(l)+H2O(l) Part A Given 7.30 gg 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. Part B A chemist ran the reaction and obtained 5.95 gg of ethyl butyrate. What was the percent yield? Express your answer as a percent to three significant figures. Part C The chemist discovers a more efficient catalyst that can produce ethyl butyrate with a 78.0%% yield. How many grams would be produced from 7.30 gg of…

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