Organic Chemistry, Books a la Carte Edition (9th Edition)
Organic Chemistry, Books a la Carte Edition (9th Edition)
9th Edition
ISBN: 9780134160382
Author: Leroy G. Wade, Jan W. Simek
Publisher: PEARSON
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Chapter 25, Problem 25.21SP

(a)

Interpretation Introduction

To determine: A simple chemical test to distinguish between the given pair of compound.

Interpretation: A simple chemical test to distinguish between the given pair of compound is to be stated.

Concept introduction: An alkyl or aryl benzenesulfonate (a synthetic detergent) gives no precipitates with the salts of H+,Ca2+,Mg2+andFe3+ ions, whereas a sodium (soap) stearate gives precipitates with the salts of H+,Ca2+,Mg2+andFe3+ ions.

(b)

Interpretation Introduction

To determine: A simple chemical test to distinguish between the given pair of compound.

Interpretation: A simple chemical test to distinguish between the given pair of compound is to be stated.

Concept introduction: Beeswax comprises mostly esters of fatty acids and other long chain alcohols. Paraffin is a colourless solid and a mixture of long chain alkanes.

(c)

Interpretation Introduction

To determine: A simple chemical test to distinguish between the given pair of compound.

Interpretation: A simple chemical test to distinguish between the given pair of compound is to be stated.

Concept introduction: Myristic acid is soluble in dilute aqueous base and shows acidic properties, whereas trimyristin is unaffected.

(d)

Interpretation Introduction

To determine: A simple chemical test to distinguish between the given pair of compound.

Interpretation: A simple chemical test to distinguish between the given pair of compound is to be stated.

Concept introduction: Trimyristin is a saturated hydrocarbon (fat). Triolein is a unsaturated hydrocarbon (oil). Bromine in CCl4, decolourizes unsaturated hydrocarbon but does not produce any change in colour with saturated hydrocarbon.

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43) 10.00 ml of vinegar (active ingredient is acetic acid) is titrated to the endpoint using 19.32 ml of 0.250 M sodium hydroxide. What is the molarity of acetic acid in the vinegar? YOU MUST SHOW YOUR WORK. NOTE: MA x VA = MB x VB
424 Repon Sheet Rates of Chemical Reactions : Rate and Order of 1,0, Deception B. Effect of Temperature BATH TEMPERATURE 35'c Yol of Oh نام Time 485 Buret rend ing(n) 12 194 16. 6 18 20 10 22 24 14 115 95 14738 2158235 8:26 CMS 40148 Total volume of 0, collected Barometric pressure 770-572 ml mm Hg Vapor pressure of water at bath temperature (see Appendix L) 42.2 Slope Compared with the rate found for solution 1, there is Using the ideal gas law, calculate the moles of O; collected (show calculations) times faster 10 Based on the moles of O, evolved, calculate the molar concentration of the original 3% 1,0, solution (sho calculations)
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