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Chapter 2: Problem 64

Give the names and charges of the cation and anion in each of the following compounds: (a) \(\mathrm{CuS},(\mathbf{b}) \mathrm{Ag}_{2} \mathrm{SO}_{4}\), (c) \(\mathrm{Al}\left(\mathrm{ClO}_{3}\right)_{3},\) (d) \(\mathrm{Co}(\mathrm{OH})_{2}\), (e) \(\mathrm{PbCO}_{3}\).

Short Answer

Expert verified
(a) Cation: Cu\(+2\), Anion: S\(-2\) (b) Cation: Ag\(+1\), Anion: SO\(_4\)\(-2\) (c) Cation: Al\(+3\), Anion: ClO\(_3\)\(-1\) (d) Cation: Co\(+2\), Anion: OH\(-1\) (e) Cation: Pb\(+2\), Anion: CO\(_3\)\(-2\)

Step by step solution

01

Exercise (a): CuS

In this compound, we have Copper (Cu) and Sulfur (S). Copper can have a charge of either +1 or +2, and since there is only one sulfur atom present, the copper should have a charge of +2. Since sulfur belongs to group 16, its ionic charge would be -2. Thus, the cation is Cu with a charge of +2, and the anion is S with a charge of -2.
02

Exercise (b): Ag2SO4

In this compound, we have Silver (Ag) and Sulfate (SO4) as the key components. We can see that Silver has a charge of +1 since there are two Ag ions for each SO4 ion (+2 charge). Thus, the cation is Ag with a charge of +1, and the anion is SO4 with a charge of -2.
03

Exercise (c): Al(ClO3)3

In this compound, we have Aluminum (Al) and Chlorate (ClO3) as the key components. Aluminum belongs to group 13, thus having a +3 charge. As there are three Chlorate ions; therefore, each Chlorate ion present must have a charge of -1 to balance the overall compound. Hence, the cation is Al with a charge of +3, and the anion is ClO3 with a charge of -1.
04

Exercise (d): Co(OH)2

In this compound, we have Cobalt (Co) and Hydroxide (OH) as the key components. Cobalt can have multiple oxidation states, such as +2 or +3. Since there are two Hydroxide ions with a charge of -1 each, it implies that Cobalt has a +2 charge in this compound. Therefore, the cation is Co with a charge of +2, and the anion is OH with a charge of -1.
05

Exercise (e): PbCO3

In this compound, we have Lead (Pb) and Carbonate (CO3) as the key components. Since Carbonate has a charge of -2, the Lead in this compound must have a +2 charge to balance it. Thus, the cation is Pb with a charge of +2, and the anion is CO3 with a charge of -2.

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Most popular questions from this chapter

Give the chemical formula for (a) chlorite ion, (b) chloride ion, (c) chlorate ion, (d) perchlorate ion, (e) hypochlorite ion.

Carbonic acid occurs in carbonated beverages. When allowed to react with lithium hydroxide it produces lithium carbonate. Lithium carbonate is used to treat depression and bipolar disorder. Write chemical formulas for carbonic acid, lithium hydroxide, and lithium carbonate.

Fill in the blanks in the following table: $$ \begin{array}{|l|l|l|l|} \hline \text { Cation } & \text { Anion } & \text { Formula } & \text { Name } \\\ \hline & & & \text { Lithium oxide } \\ \hline \mathrm{Fe}^{2+} & \mathrm{PO}_{4}^{3-} & & \\ \hline & & \mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3} & \\ \hline & & & \text { Copper(II) nitrate } \\ \hline \mathrm{Cr}^{3+} & \mathrm{I}^{-} & & \\ \hline & & \mathrm{MnClO}_{2} & \\ \hline & & & \text { Ammonium carbonate } \\ \hline & & & \text { Zinc perchlorate } \\ \hline \end{array} $$

The compound cyclohexane is an alkane in which six carbon atoms form a ring. The partial structural formula of the compound is as follows: (a) Complete the structural formula for cyclohexane. (b) Is the molecular formula for cyclohexane the same as that for \(n\) -hexane, in which the carbon atoms are in a straight line? If possible, comment on the source of any differences. (c) Propose a structural formula for cyclohexanol, the alcohol derived from cyclohexane.

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