
Each of the following compounds is incorrectly named is wrong with each name, and what is the correct name each compound?
- a. FeCl3 iron chloride
- b. NO2, nitrogen(IV) oxide
- c. CaO, calcium(II) monoxide
- d. Al2S3, dialuminum trisulfide
- e. Mg(C2,H3O2)2, manganese diacetate
- f. FePO4, iron(II) phosphide
- g. P2S5, phosphorus sulfide
- h. Na2O2, sodium oxide
- i. HNO3 nitrate acid
- j. H2S, sulfuric acid
(a)

Interpretation:
The naming of the compounds is to be checked. Correct naming of the compound is to be stated.
Concept introduction: While naming covalent compound, the name of the cation is written first, followed by the name of the anion. Generally, the cation present is a metal or a polyatomic cation, whereas the anion is a non-metal.
Answer to Problem 88E
Oxidation state should be shown in
The correct name of
Explanation of Solution
To determine: The error in the naming of
Oxidation state should be shown in
Hence, the given name iron chloride of
The correct name of
Iron
Here iron
The Roman numerals are used in the naming of compounds that exhibit more than one oxidation state. Iron is such compound that exhibit more than one oxidation state. So, the correct name of the compound is iron (III) chloride.
(b)

Interpretation:
The naming of the compounds is to be checked. Correct naming of the compound is to be stated.
Concept introduction: While naming covalent compound, the name of the cation is written first, followed by the name of the anion. Generally, the cation present is a metal or a polyatomic cation, whereas the anion is a non-metal.
Answer to Problem 88E
Roman numerals should not be given.
The correct name of
Explanation of Solution
To determine: The error in the naming of
Roman numerals should not be given.
The element nitrogen
Hence, the given name nitrogen (IV) oxide of
The correct name of
In naming of covalent compound, the name of cation comes first which is the name of element. Anion is named second which is also the name of element. The anions are named with the ending -ide. Also the number of respective atoms present is denoted by using prefixes like mono, di tri.
Hence, the name of given compound is nitrogen dioxide.
The Roman numerals are used only in the naming of transition metals compounds. Nitrogen is not a transition metal. So, the correct name of the compound is nitrogen dioxide.
(c)

Interpretation:
The naming of the compounds is to be checked. Correct naming of the compound is to be stated.
Concept introduction: While naming covalent compound, the name of the cation is written first, followed by the name of the anion. Generally, the cation present is a metal or a polyatomic cation, whereas the anion is a non-metal.
Answer to Problem 88E
Roman numerals should not be given.
The correct name of
Explanation of Solution
To determine: The error in the naming of
Roman numerals should not be given.
The element calcium
Hence, the given name calcium (II) monoxide of
The correct name of
In naming of covalent compound, the name of cation comes first which is the name of element. Anion is named second which is also the name of element. The anions are named with the ending -ide.
In
Hence, the name of given compound is calcium oxide.
The Roman numerals are used only in the naming of transition metals compounds. Calcium is not a transition metal. So, the correct name of the compound is calcium oxide.
(d)

Interpretation:
The naming of the compounds is to be checked. Correct naming of the compound is to be stated.
Concept introduction: While naming covalent compound, the name of the cation is written first, followed by the name of the anion. Generally, the cation present is a metal or a polyatomic cation, whereas the anion is a non-metal.
Answer to Problem 88E
Prefix should not be given.
The correct name of
Explanation of Solution
To determine: The error in the naming of
Prefix should not be given.
The element Alumunium
Hence, the given name dialuminum trisulfide of
The correct name of
In naming of covalent compound, the name of cation comes first which is the name of element. Anion is named second which is also the name of element. The anions are named with the ending -ide.
In
Hence, the name of given compound is alumunium sulfide.
Prefix is mostly used when two non-metals are combined and contains more than one atom. Aluminum is a metal and sulfur is non-metal. Hence, the correct name of
(e)

Interpretation:
The naming of the compounds is to be checked. Correct naming of the compound is to be stated.
Concept introduction: While naming covalent compound, the name of the cation is written first, followed by the name of the anion. Generally, the cation present is a metal or a polyatomic cation, whereas the anion is a non-metal.
Answer to Problem 88E
Symbol name is wrong.
The correct name of
Explanation of Solution
To determine: The error in the naming of
Symbol name is wrong.
The symbol
Hence, the given name manganese diacetate of
The correct name of
In naming of covalent compound, the name of cation comes first which is the name of element. Anion is named second which is also the name of element. The poly atomic anions are named with the ending -ate.
In
Hence, the name of given compound is magnesium acetate.
Prefix is mostly used when two non-metals are combined and contains more than one atom. Magnesium is a metal. Hence, the correct name of
(f)

Interpretation:
The naming of the compounds is to be checked. Correct naming of the compound is to be stated.
Concept introduction: While naming covalent compound, the name of the cation is written first, followed by the name of the anion. Generally, the cation present is a metal or a polyatomic cation, whereas the anion is a non-metal.
Answer to Problem 88E
The given oxidation state is wrong.
The correct name of
Explanation of Solution
To determine: The error in the naming of
The given oxidation state is wrong.
Roman numerals are used to show the oxidation state of compounds that exhibit more than one oxidation state. Iron
Hence, the given name iron (II) phosphate of
The correct name of
Iron
Here iron
The Roman numerals are used in the naming of compounds that exhibit more than one oxidation state. Iron is such compound that exhibit more than one oxidation state. So, the correct name of the compound is iron (III) phosphate.
(g)

Interpretation:
The naming of the compounds is to be checked. Correct naming of the compound is to be stated.
Concept introduction: While naming covalent compound, the name of the cation is written first, followed by the name of the anion. Generally, the cation present is a metal or a polyatomic cation, whereas the anion is a non-metal.
Answer to Problem 88E
Prefix should not be given.
The correct name of
Explanation of Solution
To determine: The error in the naming of
Prefix should not be given.
The element phosphorous
Hence, the given name phosphorus sulfide of
The correct name of
In naming of covalent compound, the name of cation comes first which is the name of element. Anion is named second which is also the name of element. The anions are named with the ending -ide. Prefix is used when two non-metals are combined and contains more than one atom.
Phosphorous
Hence, the name of given compound is diphosphorous pentasulfide.
Prefix is mostly used when two non-metals are combined and contains more than one atom. Hence, the correct name of
(h)

Interpretation:
The naming of the compounds is to be checked. Correct naming of the compound is to be stated.
Concept introduction: While naming covalent compound, the name of the cation is written first, followed by the name of the anion. Generally, the cation present is a metal or a polyatomic cation, whereas the anion is a non-metal.
Answer to Problem 88E
The compound is not neutral.
The correct name of
Explanation of Solution
To determine: The error in the naming of
The compound is not neutral.
The oxidation state of sodium
Oxygen
Sodium peroxide is formed when two sodium and oxygen atoms is combined together.
Hence, the given name sodium oxide of
The correct name of
Sodium peroxide is formed when two sodium
Hence, the name of given compound is sodium peroxide.
The compound is always electrically neutral. The charge of cation and anion should be balanced during formation of any compound.
(i)

Interpretation:
The naming of the compounds is to be checked. Correct naming of the compound is to be stated.
Concept introduction: While naming covalent compound, the name of the cation is written first, followed by the name of the anion. Generally, the cation present is a metal or a polyatomic cation, whereas the anion is a non-metal.
Answer to Problem 88E
Root of anion is wrong.
The correct name of
Explanation of Solution
To determine: The error in the naming of
Root of anion is wrong.
In the acidic compound
- If the name of anions ends in “ate-” then acid name ends in –ic or –ric
Hence, the given name nitrate acid of
The correct name of
In the acidic compound
- If the name of anions ends in “ate-” then acid name ends in –ic or –ric
Hence, the given name is nitric acid.
In naming of acidic compound roots of anion is considered.
(j)

Interpretation:
The naming of the compounds is to be checked. Correct naming of the compound is to be stated.
Concept introduction: While naming covalent compound, the name of the cation is written first, followed by the name of the anion. Generally, the cation present is a metal or a polyatomic cation, whereas the anion is a non-metal.
Answer to Problem 88E
No oxygen atom is present.
The correct name of
Explanation of Solution
To determine: The error in the naming of
No oxygen atom is present.
In the acidic compound
- When oxygen is not present in anion, then acids is named by using “hydro-” in prefix.
Hence, the given name nitrate acid of
The correct name of
In the acidic compound
- When oxygen is not present in anion, then acids is named by using “hydro-” in prefix.
Hence, the given name is hydro sulfuric acid.
If oxygen is not present in anion, then acids is named by using “hydro-” in prefix.
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Chapter 2 Solutions
CHEMISTRY,AP EDITION-W/ACCESS (HS)
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