Chapter 6, Problem 22PE

(a)

Interpretation Introduction

Interpretation:

The chemical formula of sodium chromate has to be written.

Answer to Problem 22PE

The chemical formula of sodium chromate is ${\text{Na}}_{\text{2}}{\text{CrO}}_{\text{4}}\text{.}$

Explanation of Solution

In sodium chromate, the cation is sodium $\left({\text{Na}}^{\text{+}}\right)$ and the anion is chromate $\left({\text{CrO}}_{\text{4}}{}^{\text{2-}}\right)\text{.}$

The chemical formula of sodium chromate is ${\text{Na}}_{\text{2}}{\text{CrO}}_{\text{4}}\text{.}$

(b)

Interpretation Introduction

Interpretation:

The chemical formula of magnesium hydride has to be written.

Answer to Problem 22PE

The chemical formula of magnesium hydride is ${\text{MgH}}_{\text{2}}\text{.}$

Explanation of Solution

In magnesium hydride, the cation is magnesium $\left({\text{Mg}}^{\text{2+}}\right)$ and the anion is hydrogen (hydride) $\left({\text{H}}^{\text{-}}\right)\text{.}$

The chemical formula of magnesium hydride is ${\text{MgH}}_{\text{2}}\text{.}$

(c)

Interpretation Introduction

Interpretation:

The chemical formula of nickel (II) acetate has to be written.

Answer to Problem 22PE

The chemical formula of nickel (II) acetate is $\text{Ni}{\left({\text{CH}}_{\text{3}}\text{COO}\right)}_{\text{2}}\text{.}$

Explanation of Solution

In nickel (II) acetate, the cation is nickel (II) $\left({\text{Ni}}^{\text{2+}}\right)$ and the anion is acetate $\left({\text{CH}}_{\text{3}}{\text{COO}}^{\text{-}}\right)\text{.}$

The chemical formula of nickel (II) acetate is $\text{Ni}{\left({\text{CH}}_{\text{3}}\text{COO}\right)}_{\text{2}}\text{.}$

(d)

Interpretation Introduction

Interpretation:

The chemical formula of calcium chlorate has to be written.

Answer to Problem 22PE

The chemical formula of calcium chlorate is $\text{Ca}{\left({\text{ClO}}_{\text{3}}\right)}_{\text{2}}\text{.}$

Explanation of Solution

In calcium chlorate, the cation is calcium $\left({\text{Ca}}^{\text{2+}}\right)$ and the anion is chlorate $\left({\text{ClO}}_{\text{3}}{}^{\text{-}}\right)\text{.}$

The chemical formula of calcium chlorate is $\text{Ca}{\left({\text{ClO}}_{\text{3}}\right)}_{\text{2}}\text{.}$

(e)

Interpretation Introduction

Interpretation:

The chemical formula of magnesium bromate has to be written.

Answer to Problem 22PE

The chemical formula of magnesium bromate is $\text{Mg}{\left({\text{BrO}}_{\text{3}}\right)}_{\text{2}}\text{.}$

Explanation of Solution

In magnesium bromate, the cation is magnesium $\left({\text{Mg}}^{\text{2+}}\right)$ and the anion is bromate $\left({\text{BrO}}_{\text{3}}{}^{\text{-}}\right)\text{.}$

The chemical formula of magnesium bromate is $\text{Mg}{\left({\text{BrO}}_{\text{3}}\right)}_{\text{2}}\text{.}$

(f)

Interpretation Introduction

Interpretation:

The chemical formula of potassium dihydrogen phosphate has to be written.

Answer to Problem 22PE

The chemical formula of potassium dihydrogen phosphate is ${\text{KH}}_{\text{2}}{\text{PO}}_{\text{4}}\text{.}$

Explanation of Solution

In potassium dihydrogen phosphate, the cation is potassium $\left({\text{K}}^{\text{+}}\right)$ and the anion is dihydrogen phosphate $\left({\text{H}}_{\text{2}}{\text{PO}}_{\text{4}}{}^{\text{-}}\right)\text{.}$

The chemical formula of potassium dihydrogen phosphate is ${\text{KH}}_{\text{2}}{\text{PO}}_{\text{4}}\text{.}$

(g)

Interpretation Introduction

Interpretation:

The chemical formula of manganese (II) hydroxide has to be written.

Answer to Problem 22PE

The chemical formula of manganese (II) hydroxide is $\text{Mn}{\left(\text{OH}\right)}_{\text{2}}\text{.}$

Explanation of Solution

In manganese (II) hydroxide, the cation is manganese (II) $\left({\text{Mn}}^{\text{2+}}\right)$ and the anion is hydroxide $\left({\text{OH}}^{\text{-}}\right)\text{.}$

The chemical formula of manganese (II) hydroxide is $\text{Mn}{\left(\text{OH}\right)}_{\text{2}}\text{.}$

(h)

Interpretation Introduction

Interpretation:

The chemical formula of cobalt (II) hydrogen carbonate has to be written.

Answer to Problem 22PE

The chemical formula of cobalt (II) hydrogen carbonate is $\text{Co}{\left({\text{HCO}}_{\text{3}}\right)}_{\text{2}}.$

Explanation of Solution

In cobalt (II) hydrogen carbonate, the cation is cobalt (II) $\left({\text{Co}}^{\text{2+}}\right)$ and the anion is hydrogen carbonate/bicarbonate $\left({\text{HCO}}_{\text{3}}{}^{\text{-}}\right)\text{.}$

The chemical formula of cobalt (II) hydrogen carbonate is $\text{Co}{\left({\text{HCO}}_{\text{3}}\right)}_{\text{2}}.$

(i)

Interpretation Introduction

Interpretation:

The chemical formula of sodium hypochlorite has to be written.

Answer to Problem 22PE

The chemical formula of sodium hypochlorite is $\text{NaClO}\text{.}$

Explanation of Solution

In sodium hypochlorite, the cation is sodium $\left({\text{Na}}^{\text{+}}\right)$ and the anion is hypochlorite $\left({\text{ClO}}^{\text{-}}\right).$

The chemical formula of sodium hypochlorite is $\text{NaClO}\text{.}$

(j)

Interpretation Introduction

Interpretation:

The chemical formula of barium perchlorate has to be written.

Answer to Problem 22PE

The chemical formula of barium perchlorate is $\text{Ba}{\left({\text{ClO}}_{\text{4}}\right)}_{\text{2}}\text{.}$

Explanation of Solution

In barium perchlorate, the cation is barium $\left({\text{Ba}}^{\text{2+}}\right)$ and the anion is perchlorate $\left({\text{ClO}}_{\text{4}}{}^{\text{-}}\right)\text{.}$

The chemical formula of barium perchlorate is $\text{Ba}{\left({\text{ClO}}_{\text{4}}\right)}_{\text{2}}\text{.}$

(k)

Interpretation Introduction

Interpretation:

The chemical formula of chromium (III) sulfite has to be written.

Answer to Problem 22PE

The chemical formula of chromium (III) sulfite is ${\text{Cr}}_{\text{2}}{\left({\text{SO}}_{\text{3}}\right)}_{\text{3}}\text{.}$

Explanation of Solution

In chromium (III) sulfite, the cation is chromium (III) $\left({\text{Cr}}^{\text{3+}}\right)$ and the anion is sulfite $\left({\text{SO}}_{\text{3}}{}^{\text{2-}}\right)\text{.}$

The chemical formula of chromium (III) sulfite is ${\text{Cr}}_{\text{2}}{\left({\text{SO}}_{\text{3}}\right)}_{\text{3}}\text{.}$

(l)

Interpretation Introduction

Interpretation:

The chemical formula of antimony (III) sulfate has to be written.

Answer to Problem 22PE

The chemical formula of antimony (III) sulfate is ${\text{Sb}}_{\text{2}}{\left({\text{SO}}_{\text{4}}\right)}_{\text{3}}\text{.}$

Explanation of Solution

In antimony (III) sulfate, the cation is antimony (III) $\left({\text{Sb}}^{\text{3+}}\right)$ and the anion is sulfate $\left({\text{SO}}_{\text{4}}{}^{\text{2-}}\right)\text{.}$

The chemical formula of antimony (III) sulfate is ${\text{Sb}}_{\text{2}}{\left({\text{SO}}_{\text{4}}\right)}_{\text{3}}\text{.}$

(m)

Interpretation Introduction

Interpretation:

The chemical formula of sodium oxalate has to be written.

Answer to Problem 22PE

The chemical formula of sodium oxalate is ${\text{Na}}_{\text{2}}{\text{C}}_{\text{2}}{\text{O}}_{\text{4}}\text{.}$

Explanation of Solution

In sodium oxalate, the cation is sodium $\left({\text{Na}}^{\text{+}}\right)$ and the anion is oxalate $\left({\text{C}}_{\text{2}}{\text{O}}_{\text{4}}{}^{\text{2-}}\right)\text{.}$

The chemical formula of sodium oxalate is ${\text{Na}}_{\text{2}}{\text{C}}_{\text{2}}{\text{O}}_{\text{4}}\text{.}$

(n)

Interpretation Introduction

Interpretation:

The chemical formula of potassium thiocyanate has to be written.

Answer to Problem 22PE

The chemical formula of potassium thiocyanate is $\text{KSCN}\text{.}$

Explanation of Solution

In potassium thiocyanate, the cation is potassium $\left({\text{K}}^{\text{+}}\right)$ and the anion is thiocyanate $\left({\text{SCN}}^{\text{-}}\right)\text{.}$

The chemical formula of potassium thiocyanate is $\text{KSCN}\text{.}$