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Chapter 24: Problem 51

Write a balanced chemical equation using condensed structural formulas for the saponification (base hydrolysis) of (a) methyl propionate, (b) phenyl acetate.

Short Answer

Expert verified
(a) Methyl propionate saponification balanced equation: \(CH_3CH_2COOCH_3 + OH^- \rightarrow CH_3CH_2COO^- + CH_3OH\) (b) Phenyl acetate saponification balanced equation: \(C_6H_5COOCH_3 + OH^- \rightarrow C_6H_5COO^- + CH_3OH\)

Step by step solution

01

Condensed structural formula of methyl propionate

The structural formula of methyl propionate is CH3CH2COOCH3. (b) Phenyl acetate
02

Condensed structural formula of phenyl acetate

The structural formula of phenyl acetate is C6H5COOCH3. 2. Write the base hydrolysis reaction of the ester A base, such as hydroxide ions (OH-), is required for saponification to occur. (a) Methyl propionate saponification
03

Base hydrolysis of methyl propionate

CH3CH2COOCH3 + OH- (b) Phenyl acetate saponification
04

Base hydrolysis of phenyl acetate

C6H5COOCH3 + OH- 3. Write the resulting products (alcohol and salt of the carboxylic acid) (a) Methyl propionate saponification products
05

Products of methyl propionate saponification

CH3CH2COO- + CH3OH (b) Phenyl acetate saponification products
06

Products of phenyl acetate saponification

C6H5COO- + CH3OH 4. Balance the chemical equation In this case, both esters react with a 1:1 ratio with hydroxide ions, meaning the chemical equations are already balanced. (a) Methyl propionate saponification balanced equation
07

Balanced equation for saponification of methyl propionate

CH3CH2COOCH3 + OH- -> CH3CH2COO- + CH3OH (b) Phenyl acetate saponification balanced equation
08

Balanced equation for saponification of phenyl acetate

C6H5COOCH3 + OH- -> C6H5COO- + CH3OH

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Most popular questions from this chapter

Write the condensed structural formulas for as many alkenes and alkynes as you can think of that have the molecular formula \(\mathrm{C}_{6} \mathrm{H}_{10}\)

The molar heat of combustion of gaseous cyclopropane is \(-2089 \mathrm{~kJ} / \mathrm{mol} ;\) that for gaseous cyclopentane is \(-3317 \mathrm{~kJ} / \mathrm{mol}\). Calculate the heat of combustion per \(\mathrm{CH}_{2}\) group in the two cases, and account for the difference.

Using condensed structural formulas, write a balanced chemical equation for each of the following reactions: (a) hydrogenation of cyclohexene; (b) addition of \(\mathrm{H}_{2} \mathrm{O}\) to trans- 2 pentene using \(\mathrm{H}_{2} \mathrm{SO}_{4}\) as a catalyst (two products); (c) reaction of 2 -chloropropane with benzene in the presence of \(\mathrm{AlCl}_{3}\).

(a) Give the empirical formula and structural formula for a cyclic ether containing four carbon atoms in the ring. (b) Write the structural formula for a straight-chain compound that is a structural isomer of your answer to part (a).

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