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. NaNO_x; formula unit contains 5 atoms
2. b. Ba(CO_x)₂; formula unit contains 9 atoms
3. c. C_xH₅Cl_x; formula unit contains 11 atoms
4. d. H_xS_xO_x; formula unit contains 12 atoms

Interpretation Introduction

Interpretation:

The value of subscript “x” in the given chemical formula, $NaN{O}_x$ 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 $NaN{O}_x$.  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,

    $\begin{array}{l}Totalnumberofatoms=1Na\text{}atom+1Natom+xOatoms\\ 5=2+x\\ x=5-2\\ x=3\end{array}$

The value of subscript “x” is found to be 3.  The chemical formula can be given as $NaN{O}_3$.

Conclusion

Value of subscript “x” is determined.

Interpretation Introduction

Interpretation:

The value of subscript “x” in the given chemical formula, $Ba{(C{O}_x)}_2$ 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 $Ba{(C{O}_x)}_2$.  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,

    $\begin{array}{l}Totalnumberofatoms=1Baatom+2Catoms+2xOatoms\\ 9=3+2x\\ 2x=9-3\\ 2x=6\\ x=3\end{array}$

The value of subscript “x” is found to be 3.  The chemical formula can be given as $Ba{(C{O}_3)}_2$.

Conclusion

Value of subscript “x” is determined.

Interpretation Introduction

Interpretation:

The value of subscript “x” in the given chemical formula, $C_x{H}_{5}C{l}_x$ 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 $C_x{H}_{5}C{l}_x$.  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,

    $\begin{array}{l}Totalnumberofatoms=xC\text{}atom+5Hatoms+xClatom\\ 11=5+2x\\ 2x=11-5\\ 2x=6\\ x=3\end{array}$

The value of subscript “x” is found to be 3.  The chemical formula can be given as $C_3{H}_{5}C{l}_3$.

Conclusion

Value of subscript “x” is determined.

Interpretation Introduction

Interpretation:

The value of subscript “x” in the given chemical formula, $H_x{S}_x{O}_{4x}$ 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 $H_x{S}_x{O}_{4x}$.  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,

    $\begin{array}{l}Totalnumberofatoms=xH\text{}atom+xSatom+4xOatoms\\ 12=6x\\ x=12/6\\ x=2\end{array}$

The value of subscript “x” is found to be 2.  The chemical formula can be given as $H_2{S}_2{O}_8$.

Conclusion

Value of subscript “x” is determined.