   # Chlorisondamine chloride (C 14 H 20 Cl 6 N 2 ) is a drug used in the treatment of hypertension. A 1.28-g sample of a medication containing the drug was treated to destroy the organic material and to release all the chlorine as chloride ion. When the filtered solution containing chloride ion was treated with an excess of silver nitrate, 0.104 g silver chloride was recovered. Calculate the mass percent of chlorisondamine chloride in the medication, assuming the drug is the only source of chloride. ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

#### Solutions

Chapter
Section ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 6, Problem 107AE
Textbook Problem
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## Chlorisondamine chloride (C14H20Cl6N2) is a drug used in the treatment of hypertension. A 1.28-g sample of a medication containing the drug was treated to destroy the organic material and to release all the chlorine as chloride ion. When the filtered solution containing chloride ion was treated with an excess of silver nitrate, 0.104 g silver chloride was recovered.Calculate the mass percent of chlorisondamine chloride in the medication, assuming the drug is the only source of chloride.

Interpretation Introduction

Interpretation: The mass percent of chlorisondamine chloride has to be determined.

Concept introduction:

The mass percentage of compound can be calculated by taking the calculated mass of the substance to the total mass of the sample whole multiplied by 100.

The mass percent can be calculated with formula,

Masspercent(inpercentage)=Calculatedmass(ingrams)totalmass(ingrams)×100

### Explanation of Solution

Explanation

Weight of the sample= 1.28gram

Weight of the precipitate recovered = 0.104gram

The weight of the sample and weight of the precipitate is recorded as shown above to calculate the grams of chlorine ion.

Calculation for the moles of chlorine is as follows,

Molar mass of

= 0.104gAgCl×1molAgCl143.4gAgCl×1molCl-molAgCl×35.45gCl-molCl-

= 2.57×10-2gCl-

Moles of chlorine = 2.57×10-2g

The mole of chlorine has to be calculated with molar mass of chlorine and weight of precipitate recovered. The Cl- in the precipitate comes from the chlorisondamine chloride.

To calculate the quantity of C14H20Cl6N2 which contains 2.57×10-2g of chlorine.

Molar mass of C14H20Cl6N2 = 14(12.01)+20(1.008)+6(35.45)+2(14.01)

= 429.02g/mol

Therefore, there are 6 chlorine atoms,

6(35.45) = 212.70 g of chlorine

There are 212.70 g of chlorine for every mole of 429.02g of C14H20Cl6N2 .

The molar mass of C14H20Cl6N2 is calculated with quantity of chlorine that is present. The molar mass of C14H20Cl6N2 is 429

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