   Chapter 4, Problem 87GQ

Chapter
Section
Textbook Problem

Saccharin, an artificial sweetener, has the formula C7H5NO3S. Suppose you have a sample of a saccharin-containing sweetener with a mass of 0.2140 g, After decomposition to free the sulfur and convert it to the SO42– ion, the sulfate ion is trapped as water-insoluble BaSO4 (Figure 4.4). The quantity of BaSO4 obtained is 0.2070 g. What is the mass percent of saccharin in the sample of sweetener?

Interpretation Introduction

Interpretation:

The mass percent of saccharin in the given sample has to be determined.

Concept introduction:

• The relation between the number of moles and mass of the substance is ,

Numberofmole=Mass in gramMolarmass

Mass in gram of the substance =Numberofmole×Molarmass

• The molar mass of an element or compound is the mass in grams of 1 mole of that substance, and it is expressed in the unit of grams per mol (g/mol).
• For chemical reaction balanced chemical reaction equation written in accordance with the Law of conservation of mass.
• Law of conservation of mass states that for a reaction total mass of the reactant and product must be equal.
• Stoichiometric factor is a relationship between reactant and product which is obtained from the balanced chemical equation for a particular reaction.
• Amountof substance = Concentration of substance × volumeofthesubstance
• Mass percent of elements of a compound is the ratio of mass of element to the mass of whole compound and multiplied with hundred.
Explanation

Here saccharin (C7H5NO3S ) decomposes to sulfur and converts to the SO42 ion.  This SO42 is trapped as water insoluble BaSO4.

Therefore the stoichiometric ratio between saccharin and the BaSO4 will be 1:1

Thus,

The amount of saccharin C7H5NO3S can be determined from the amount of BaSO4 as follows,

amount of BaSO4 =0.2070gBaSO4233.38g/molBaSO4 = 0

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

The FDA has extensive regulatory control over supplement sad. T F

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

Where are TNF receptors located?

Introduction to General, Organic and Biochemistry

What kind of deformation does a cube of Jell-O exhibit when it jiggles?

Physics for Scientists and Engineers, Technology Update (No access codes included) 