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Chemistry: Principles and Reactions

8th Edition
William L. Masterton + 1 other
Publisher: Cengage Learning
ISBN: 9781305079373

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BuyFindarrow_forward

Chemistry: Principles and Reactions

8th Edition
William L. Masterton + 1 other
Publisher: Cengage Learning
ISBN: 9781305079373
Chapter 19, Problem 13QAP
Textbook Problem
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What is the mass percent of sulfur in the [Ag(SCN)2-]complex ion?

Interpretation Introduction

Interpretation: The mass percent of sulfur in the [Ag(SCN)2] complex ion is to be calculated.

Concept introduction: Molar mass is defined as the sum of the atomic masses of all the atoms present in the chemical formula of any compound.

Mass percentage of an element in a given complex ion is calculated by dividing the mass of the element present in the given complex ion to the mass of the complex ion.

The formula to calculate mass percent for each element in a given complex ion is:

  Mass percentage =m(element)m(complex ion)×100

Explanation of Solution

Molar mass is defined as the average of mass of atoms present in the chemical formula. It is the sum of the atomic masses of all the atoms present in the chemical formula of any compound.

The given complex ion is [Ag(SCN)2] .

The formula to calculate mass:

  Formulamass=(N1×x1)+(N2×x2)+...

  • N1 representsthe number of atoms of first element in chemical formula.
  • x1 represents the atomic mass of first element.
  • N2 represents the number of atoms of second element in chemical formula.
  • x1 represents the atomic mass of second element.

The molar mass of silver is 107.86g/mol .

The molar mass of sulfur is 32.06g/mol .

The molar mass of carbon is 12.01g/mol .

The molar mass of nitrogen is 14.00g/mol .

Substitute the value of molar mass in the above formula.

  Formulamass=(N1×x1)+(N2×x2)+

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Chapter 19 Solutions

Chemistry: Principles and Reactions
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