Q. 6.46 - An Introduction to General, Organic, and Biological Chemistry

Question

Name each of the following ionic compounds:

a. $L{i}_{2}C{O}_3$, antidepressant

b. $MgS{O}_4$, Epsom salts

c. $NaCIO$, disinfectant

d. $N{a}_{3}P{O}_4$, laxative

e. $Ba{\left(OH\right)}_2$, component of antacids

Step-by-Step Solution

Answer

(a) The ionic compound is lithium carbonate

(b) The ionic compound is magnesium sulphate

(c) The ionic compound is sodium hypochlorite

(d) The ionic compound is sodium phosphate

(e) The ionic compound is barium hydroxide

Part (a) Step 1: Given information

We need to find the name of the given ionic compound i.e. $L{i}_{2}C{O}_3$

Part (a) Step 2: Explanation

The substance is:

$L{i}_{2}C{O}_3$

$C{O}_3$ is the polyatomic ion in the molecule. Because the other atom is $Li$, which has a charge of $+1$, and there are two atoms, the polyatomic ion should have a charge of $-2$. As a result, the polyatomic ion is $C{O}_3$, or carbonate.

The cation in this chemical is lithium, and the anion is carbonate. As a result, the compound's name is lithium carbonate.

Part (b) Step 1: Given information

We need to find the name of the given ionic compound i.e. $MgS{O}_4$

Part (b) Step 2: Explanation

The substance is:

$MgS{O}_4$

$S{O}_4$ is the polyatomic ion in the chemical. The charge of the polyatomic ion should be $-2$ because the other atom is $Mg$, which has a charge of $+2$. As a result, the polyatomic ion is $S{O}_4^{2-}$, the sulphate ion.

The anion of the chemical is sulphate, and the cation is magnesium. As a result, the compound's name is magnesium sulphate.

Part (c) Step 1: Given information

We need to find the name of the given ionic compound i.e. $NaClO$

Part (c) Step 2: Explanation

The substance is:

$NaClO$

$CIO$ is the polyatomic ion in the chemical. The charge of the polyatomic ion should be $-1$ because the other atom is $Na$, which has a charge of $+1$. As a result, the polyatomic ion of hypochlorite is $ClO$, which is hypochlorite ion.

The sodium cation is present in the compound, while the hypochlorite anion is present. As a result, the compound's name is sodium hypochlorite.

Part (d) Step 1: Given information

We need to find the name of the given ionic compound i.e. $N{a}_{3}P{O}_4$

Part (d) Step 2: Explanation

The substance is:

$N{a}_{3}P{O}_4$

$P{O}_4$ is the polyatomic ion in the chemical. Because the other atom is $Na$, which has a charge of $+1$, and there are three atoms, the polyatomic ion should have a charge of $-3$. As a result, the phosphate ion, $P{O}_4^{3-}$, is the polyatomic ion.

The anion in the molecule is the phosphate ion, whereas the cation is sodium. As a result, the compound's name is sodium phosphate.

Part (e) Step 1: Given information

We need to find the name of the given ionic compound i.e. $Ba{\left(OH\right)}_2$

Part (e) Step 2: Explanation

The substance is:

$Ba{\left(OH\right)}_2$

The compound's polyatomic ion is $OH$, and there are two of these ions in the compound. The charge of the polyatomic ion should be $-1$ because the other atom is $Ba$, which has a charge of $+2$.

As a result, the hydroxide ion, $O{H}^{-}$, is the polyatomic ion.

The cation of the compound is barium, whereas the anion is the hydroxide ion. As a result, the compound's name is barium hydroxide.