General, Organic, and Biological Chemistry
General, Organic, and Biological Chemistry
7th Edition
ISBN: 9781285853918
Author: H. Stephen Stoker
Publisher: Cengage Learning
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Chapter 1, Problem 1.86EP

On the basis of the information given, determine the numerical value of the subscript x in each of the following chemical formulas.

  1. a. NaNOx; formula unit contains 5 atoms
  2. b. Ba(COx)2; formula unit contains 9 atoms
  3. c. CxH5Clx; formula unit contains 11 atoms
  4. d. HxSxOx; formula unit contains 12 atoms

(a)

Expert Solution
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Interpretation Introduction

Interpretation:

The value of subscript “x” in the given chemical formula, NaNOx as to be determined.

Concept Introduction:

The composition of a chemical compound can be presented in a very precise was with the use of chemical formula.  Chemical formula uses chemical symbols of the elements that is present in the compound and numerical subscripts that represent how many number of atoms of each element is present in the compound.

Answer to Problem 1.86EP

The value of subscript “x” is found to be 3.

Explanation of Solution

Given molecule is NaNOx.  This is said to contain five atoms per formula unit.  Therefore, the total number of atoms is 5.

Considering this the value of “x” can be found out as shown below,

    Total number of atoms = 1 Na​ atom  +  1  N  atom   +   x  O  atoms 5 = 2   +  x x = 5  −    2 x = 3

The value of subscript “x” is found to be 3.  The chemical formula can be given as NaNO3.

Conclusion

Value of subscript “x” is determined.

(b)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

The value of subscript “x” in the given chemical formula, Ba(COx)2 as to be determined.

Concept Introduction:

The composition of a chemical compound can be presented in a very precise was with the use of chemical formula.  Chemical formula uses chemical symbols of the elements that is present in the compound and numerical subscripts that represent how many number of atoms of each element is present in the compound.

Answer to Problem 1.86EP

The value of subscript “x” is found to be 3.

Explanation of Solution

Given molecule is Ba(COx)2.  This is said to contain nine atoms per formula unit.  Therefore, the total number of atoms is 9.

Considering this the value of “x” can be found out as shown below,

    Total number of atoms = 1 Ba atom  +  2  C  atoms   +   2x  O  atoms 9 = 3  +  2x 2x = 9   −   3 2x = 6 x = 3

The value of subscript “x” is found to be 3.  The chemical formula can be given as Ba(CO3)2.

Conclusion

Value of subscript “x” is determined.

(c)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

The value of subscript “x” in the given chemical formula, CxH5Clx as to be determined.

Concept Introduction:

The composition of a chemical compound can be presented in a very precise was with the use of chemical formula.  Chemical formula uses chemical symbols of the elements that is present in the compound and numerical subscripts that represent how many number of atoms of each element is present in the compound.

Answer to Problem 1.86EP

The value of subscript “x” is found to be 3.

Explanation of Solution

Given molecule is CxH5Clx.  This is said to contain eleven atoms per formula unit.  Therefore, the total number of atoms is 11.

Considering this the value of “x” can be found out as shown below,

    Total number of atoms = x C​ atom  +  5  H  atoms   +   x  Cl  atom 11 = 5  +  2x 2x = 11   −   5 2x = 6 x = 3

The value of subscript “x” is found to be 3.  The chemical formula can be given as C3H5Cl3.

Conclusion

Value of subscript “x” is determined.

(d)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

The value of subscript “x” in the given chemical formula, HxSxO4x as to be determined.

Concept Introduction:

The composition of a chemical compound can be presented in a very precise was with the use of chemical formula.  Chemical formula uses chemical symbols of the elements that is present in the compound and numerical subscripts that represent how many number of atoms of each element is present in the compound.

Answer to Problem 1.86EP

The value of subscript “x” is found to be 2.

Explanation of Solution

Given molecule is HxSxO4x.  This is said to contain twelve atoms per formula unit.  Therefore, the total number of atoms is 12.

Considering this the value of “x” can be found out as shown below,

    Total number of atoms = x H​ atom  +  x  S  atom   +   4x  O  atoms 12 = 6x x = 12/6 x = 2

The value of subscript “x” is found to be 2.  The chemical formula can be given as H2S2O8.

Conclusion

Value of subscript “x” is determined.

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