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You have seven closed containers each with equal masses of chlorine gas ( Cl 2 ) . You add 10.0 g of sodium to the first sample, 20.0 g of sodium to the second sample, and so on (adding 70.0 g of sodium to the seventh sample). Sodium and chloride react to form sodium chloride according to the equation :math> 2 Na ( s ) + Cl 2 ( g ) → 2 NaCl ( s ) ter each reaction is complete, you collect and measure the amount of sodium chloride formed. A graph of your results is shown below. mg src=Images/HTML_99425-9-18ALQ_image001.jpg alt="" align="top"/> swer the following questions: l type='a'> Explain the shape of the graph. lculate the mass of NaCl formed when 20.0 g of sodium is used.Calculate the mass of Cl 2 , in each container. lculate the mass of NaCl formed when 50.0 g of sodium is used. Identify the leftover reactant and determine its mass for parts b and d above.

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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425

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Chapter
Section
BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425
Chapter 9, Problem 18ALQ
Textbook Problem
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You have seven closed containers each with equal masses of chlorine gas ( Cl 2 ) . You add 10.0 g of sodium to the first sample, 20.0 g of sodium to the second sample, and so on (adding 70.0 g of sodium to the seventh sample). Sodium and chloride react to form sodium chloride according to the equation

:math> 2 Na ( s ) + Cl 2 ( g ) 2 NaCl ( s )

ter each reaction is complete, you collect and measure the amount of sodium chloride formed. A graph of your results is shown below.

mg src=Images/HTML_99425-9-18ALQ_image001.jpg alt="" align="top"/>

swer the following questions:

l type='a'>

  • Explain the shape of the graph.
  • lculate the mass of NaCl formed when 20.0 g of sodium is used.Calculate the mass of Cl 2

  • , in each container.
  • lculate the mass of NaCl formed when 50.0 g of sodium is used.

  • Identify the leftover reactant and determine its mass for parts b and d above.
  • Interpretation Introduction

    (a)

    Interpretation:

    An explanation regarding the shape of the given graph is to be stated.

    Concept Introduction:

    A reactant that would be eliminated first if the reaction proceeded to completion is known as the limiting reactant. In other words, it is the reactant that is present in the lower concentration in the given reaction mixture. The other reactant that is present in higher concentration in the given reaction mixture is known as the excess reactant.

    Explanation of Solution

    The given balanced equation is,

    2Na(s)+Cl2(g)2NaCl(s)

    According to this equation, 2 moles of sodium and 1mole of chlorine combines to form 2moles of sodium chloride.

    The given graph that is plotted between the mass of sodium and mass of sodium chloride is shown as follows.

    Interpretation Introduction

    (b)

    Interpretation:

    The mass of NaCl that is formed after using 20.0g of sodium is to be calculated.

    Concept Introduction:

    A reactant that would be eliminated first if the reaction proceeded to completion is known as the limiting reactant. In other words, it is the reactant that is present in the lower concentration in the given reaction mixture. The other reactant that is present in higher concentration in the given reaction mixture is known as the excess reactant.

    Stoichiometry helps in determining the relationship between the number of moles of the reactants and products that are involved in a reaction. For proper calculations, the reaction must be balanced.

    Interpretation Introduction

    (c)

    Interpretation:

    The mass of Cl2 that is present in each container is to be calculated.

    Concept Introduction:

    A reactant that would be eliminated first if the reaction proceeded to completion is known as the limiting reactant. In other words, it is the reactant that is present in the lower concentration in the given reaction mixture. The other reactant that is present in higher concentration in the given reaction mixture is known as the excess reactant.

    Stoichiometry helps in determining the relationship between the number of moles of the reactants and products that are involved in a reaction. For proper calculations, the reaction must be balanced.

    Number of moles is equal to the ratio of given mass to the molar mass.

    Interpretation Introduction

    (d)

    Interpretation:

    The mass of NaCl that is formed after using 50.0g of sodium is to be calculated.

    Concept Introduction:

    A reactant that would be eliminated first if the reaction proceeded to completion is known as the limiting reactant. In other words, it is the reactant that is present in the lower concentration in the given reaction mixture. The other reactant that is present in higher concentration in the given reaction mixture is known as the excess reactant.

    Stoichiometry helps in determining the relationship between the number of moles of the reactants and products that are involved in a reaction. For proper calculations, the reaction must be balanced.

    Number of moles is equal to the ratio of given mass to the molar mass.

    Interpretation Introduction

    (e)

    Interpretation:

    The leftover reactant in the given reaction is to be identified. The mass of the leftover reactant for parts b and d is to be calculated.

    Concept Introduction:

    A reactant that would be eliminated first if the reaction proceeded to completion is known as the limiting reactant. In other words, it is the reactant that is present in the lower concentration in the given reaction mixture. The other reactant that is present in higher concentration in the given reaction mixture is known as the excess reactant.

    Stoichiometry helps in determining the relationship between the number of moles of the reactants and products that are involved in a reaction. For proper calculations, the reaction must be balanced.

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    Chapter 9 Solutions

    Introductory Chemistry: A Foundation
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