Chapter 6, Problem 1PE

Interpretation Introduction

(a)

Interpretation:

The chemical formula of each of the following is to be written. In parts a, the black spheres represent carbon atoms; the red, oxygen atoms; and the white, hydrogen atoms.

Concept introduction:

The particles possessing by chemical compounds are usually represented by chemical formulas. Besides, the chemical formula of a substance is having the symbols of element using which the chemical compound is made. Generally, in a chemical formula, the subscript number after a symbol denotes the number of atoms of the element in the formula unit of the substance. If the compound is having only one atom of an element of interest, the subscript is omitted.

Answer to Problem 1PE

The chemical formula of the compound is C₂H₆O

Explanation of Solution

The chemical compounds are made up of polyatomic ions and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. In the above example, the black spheres represent carbon atoms; the red, oxygen atoms; and the white represents hydrogen atoms. From the diagram, we come to know that,

Number of carbon atoms = 2

Number of hydrogen atoms = 6

Number of oxygen atom = 1

Thus, the molecular formula is C₂H₆O

Conclusion

Thus, the chemical formula of compound (a) is written.

Interpretation Introduction

(b)

Interpretation:

The chemical formula of each of the following is to be written. In parts b, the black spheres represent carbon atoms; the red, oxygen atoms; and the white, hydrogen atoms.

Concept introduction:

The particles possessing by chemical compounds are usually represented by chemical formulas. Besides, the chemical formula of a substance is having the symbols of element using which the chemical compound is made. Generally, in a chemical formula, the subscript number after a symbol denotes the number of atoms of the element in the formula unit of the substance. If the compound is having only one atom of an element of interest, the subscript is omitted.

Answer to Problem 1PE

The chemical formula of the compound is C₂H₆O

Explanation of Solution

The chemical compounds are made up of polyatomic ions and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. In the above example, the black spheres represent carbon atoms; the red, oxygen atoms; and the white represents hydrogen atoms. From the diagram, we come to know that,

Number of carbon atoms = 2

Number of hydrogen atoms = 6

Number of oxygen atom = 1

Thus, the molecular formula is C₂H₆O

Conclusion

Thus, the chemical formula of compound (b) is written.

Interpretation Introduction

(c)

Interpretation:

The chemical formula of each of the following is to be written. In parts c, the black spheres represent carbon atoms; the red, oxygen atoms; and the white, hydrogen atoms.

Concept introduction:

The particles possessing by chemical compounds are usually represented by chemical formulas. Besides, the chemical formula of a substance is having the symbols of element using which the chemical compound is made. Generally, in a chemical formula, the subscript number after a symbol denotes the number of atoms of the element in the formula unit of the substance. If the compound is having only one atom of an element of interest, the subscript is omitted.

Answer to Problem 1PE

The chemical formula of the compound is CH₂O

Explanation of Solution

The chemical compounds are made up of polyatomic ions and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. In the above example, the black spheres represent carbon atoms; the red, oxygen atoms; and the white represents hydrogen atoms. From the diagram, we come to know that,

Number of carbon atoms = 1

Number of hydrogen atoms = 2

Number of oxygen atom = 1

Thus, the molecular formula is CH₂O

Conclusion

Thus, the chemical formula of compound (c) is written.

Interpretation Introduction

(d)

Interpretation:

The chemical formula of each of the following is to be written. In parts d, the black spheres represent carbon atoms; the red, oxygen atoms; and the white, hydrogen atoms.

Concept introduction:

The particles possessing by chemical compounds are usually represented by chemical formulas. Besides, the chemical formula of a substance is having the symbols of element using which the chemical compound is made. Generally, in a chemical formula, the subscript number after a symbol denotes the number of atoms of the element in the formula unit of the substance. If the compound is having only one atom of an element of interest, the subscript is omitted.

Answer to Problem 1PE

The chemical formula of the compound is C₃H₆O

Explanation of Solution

The chemical compounds are made up of polyatomic ions and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. In the above example, the black spheres represent carbon atoms; the red, oxygen atoms; and the white represents hydrogen atoms. From the diagram, we come to know that,

Number of carbon atoms = 3

Number of hydrogen atoms = 6

Number of oxygen atom = 1

Thus, the molecular formula is C₃H₆O

Conclusion

Thus, the chemical formula of compound (d) is written.

Interpretation Introduction

(e)

Interpretation:

The chemical formula of each of the following is to be written. In parts e, the compound made up of molecules with one nitrogen atom and three hydrogen atoms

Concept introduction:

The particles possessing by chemical compounds are usually represented by chemical formulas. Besides, the chemical formula of a substance is having the symbols of element using which the chemical compound is made. Generally, in a chemical formula, the subscript number after a symbol denotes the number of atoms of the element in the formula unit of the substance. If the compound is having only one atom of an element of interest, the subscript is omitted.

Answer to Problem 1PE

The chemical formula of the compound is NH₃

Explanation of Solution

The chemical compounds are made up of polyatomic ions and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. In the above example, the black spheres represent carbon atoms; the red, oxygen atoms; and the white represents hydrogen atoms. From the diagram, we come to know that,

Number of nitrogen atom = 1

Number of hydrogen atoms = 3

Thus, the molecular formula is NH₃

Conclusion

Thus, the chemical formula of compound (e) is written.

Interpretation Introduction

(f)

Interpretation:

The chemical formula of each of the following is to be written. In parts f, the compound made up of a crystal with two particles coming from aluminium atoms for every three particles coming from oxygen atoms.

Concept introduction:

The particles possessing by chemical compounds are usually represented by chemical formulas. Besides, the chemical formula of a substance is having the symbols of element using which the chemical compound is made. Generally, in a chemical formula, the subscript number after a symbol denotes the number of atoms of the element in the formula unit of the substance. If the compound is having only one atom of an element of interest, the subscript is omitted.

Answer to Problem 1PE

The chemical formula of the compound is Al₂O₃

Explanation of Solution

The chemical compounds are made up of polyatomic ions and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. In the above example, the black spheres represent carbon atoms; the red, oxygen atoms; and the white represents hydrogen atoms. From the diagram, we come to know that,

Number of aluminium atoms = 2

Number of oxygen atoms = 3

Thus, the molecular formula is Al₂O₃

Conclusion

Thus, the chemical formula of compound (f) is written.