Chapter 6, Problem 10RQ

(a)

Interpretation Introduction

Interpretation:

The chemical formula of the compound formed from nickel (II) ion and sulfate has to be written.

Answer to Problem 10RQ

The chemical formula of the compound formed from nickel (II) ion and sulfate is ${\text{NiSO}}_{\text{4}}\text{.}$

Explanation of Solution

Nickel (II) ion reacts with sulfate ion to form nickel sulfate.  In nickel sulfate, the charge on nickel cation $\left({\text{Ni}}^{\text{2+}}\right)$ is $\text{+2}\text{.}$  The charge on sulfate anion $\left({\text{SO}}_{\text{4}}{}^{\text{2-}}\right)$  is $\text{-2}\text{.}$  The chemical formula of the compound formed from nickel (II) ion and sulfate is ${\text{NiSO}}_{\text{4}}\text{.}$

(b)

Interpretation Introduction

Interpretation:

The chemical formula of the compound formed from nickel (II) ion and phosphide has to be written.

Answer to Problem 10RQ

The chemical formula of the compound formed from nickel (II) ion and phosphide is ${\text{Ni}}_{\text{3}}{\text{P}}_{\text{2}}\text{.}$

Explanation of Solution

Nickel (II) ion reacts with phosphide ion to form nickel (II) phosphide.  In nickel phosphide, the charge on nickel cation $\left({\text{Ni}}^{\text{2+}}\right)$ is $\text{+2}\text{.}$  The charge on phosphide anion $\left({\text{P}}^{\text{3-}}\right)$  is $\text{-3}\text{.}$  The chemical formula of the compound formed from nickel (II) ion and phosphide is ${\text{Ni}}_{\text{3}}{\text{P}}_{\text{2}}\text{.}$

(c)

Interpretation Introduction

Interpretation:

The chemical formula of the compound formed from nickel (II) ion and chromate has to be written.

Answer to Problem 10RQ

The chemical formula of the compound formed from nickel (II) ion and chromate is ${\text{NiCrO}}_{\text{4}}\text{.}$

Explanation of Solution

Nickel (II) ion reacts with chromate ion to form nickel (II) chromate.  In nickel chromate, the charge on nickel cation $\left({\text{Ni}}^{\text{2+}}\right)$ is $\text{+2}\text{.}$  The charge on chromate anion $\left({\text{CrO}}_{\text{4}}{}^{\text{2-}}\right)$ is $\text{-2}\text{.}$  The chemical formula of the compound formed from nickel (II) ion and chromate is ${\text{NiCrO}}_{\text{4}}\text{.}$

(d)

Interpretation Introduction

Interpretation:

The chemical formula of the compound formed from nickel (II) ion and hydroxide has to be written.

Answer to Problem 10RQ

The chemical formula of the compound formed from nickel (II) ion and hydroxide is $\text{Ni}{\left(\text{OH}\right)}_{\text{2}}\text{.}$

Explanation of Solution

Nickel (II) ion reacts with hydroxide ion to form nickel (II) hydroxide.  In nickel (II) hydroxide, the charge on nickel cation $\left({\text{Ni}}^{\text{2+}}\right)$ is $\text{+2}\text{.}$  The charge on hydroxide anion is $\text{-1}\text{.}$  The chemical formula of the compound formed from nickel (II) ion and hydroxide is $\text{Ni}{\left(\text{OH}\right)}_{\text{2}}\text{.}$

(e)

Interpretation Introduction

Interpretation:

The chemical formula of the compound formed from nickel (II) ion and iodite has to be written.

Answer to Problem 10RQ

The chemical formula of the compound formed from nickel (II) ion and iodite is $\text{Ni}{\left({\text{IO}}_{\text{2}}\right)}_{\text{2}}\text{.}$

Explanation of Solution

Nickel (II) ion reacts with iodite ion to form nickel (II) iodite.  In nickel (II) iodite, the charge on nickel cation $\left({\text{Ni}}^{\text{2+}}\right)$ is $\text{+2}\text{.}$  The charge on iodite anion $\left({\text{IO}}_{\text{2}}{}^{\text{-}}\right)$ is $\text{-1}\text{.}$  The chemical formula of the compound formed from nickel (II) ion and iodite is $\text{Ni}{\left({\text{IO}}_{\text{2}}\right)}_{\text{2}}\text{.}$

(f)

Interpretation Introduction

Interpretation:

The chemical formula of the compound formed from nickel (II) ion and acetate has to be written.

Answer to Problem 10RQ

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

Explanation of Solution

Nickel (II) ion reacts with acetate ion to form nickel (II) acetate.  In nickel (II) acetate, the charge on nickel cation $\left({\text{Ni}}^{\text{2+}}\right)$ is $\text{+2}\text{.}$  The charge on acetate anion $\left({\text{CH}}_{\text{3}}{\text{COO}}^{\text{-}}\right)$ is $\text{-1}\text{.}$  The chemical formula of the compound formed from nickel (II) ion and acetate is $\text{Ni}{\left({\text{CH}}_{\text{3}}\text{COO}\right)}_{\text{2}}\text{.}$

(g)

Interpretation Introduction

Interpretation:

The chemical formula of the compound formed from nickel (II) ion and dichromate has to be written.

Answer to Problem 10RQ

The chemical formula of the compound formed from nickel (II) ion and dichromate is ${\text{NiCr}}_{\text{2}}{\text{O}}_{\text{7}}\text{.}$

Explanation of Solution

Nickel (II) ion reacts with dichromate ion to form nickel (II) dichromate.  In nickel chromate, the charge on nickel cation $\left({\text{Ni}}^{\text{2+}}\right)$ is $\text{+2}\text{.}$  The charge on dichromate anion $\left({\text{Cr}}_{\text{2}}{\text{O}}_{\text{7}}{}^{\text{2-}}\right)$ is $\text{-2}\text{.}$  The chemical formula of the compound formed from nickel (II) ion and dichromate is ${\text{NiCr}}_{\text{2}}{\text{O}}_{\text{7}}\text{.}$

(h)

Interpretation Introduction

Interpretation:

The chemical formula of the compound formed from nickel (II) ion and bromide has to be written.

Answer to Problem 10RQ

The chemical formula of the compound formed from nickel (II) ion and bromide is ${\text{NiBr}}_{\text{2}}\text{.}$

Explanation of Solution

Nickel (II) ion reacts with bromide ion to form nickel (II) bromide.  In nickel (II) bromide, the charge on nickel cation $\left({\text{Ni}}^{\text{2+}}\right)$ is $\text{+2}\text{.}$  The charge on bromide anion $\left({\text{Br}}^{\text{-}}\right)$ is $\text{-1}\text{.}$  The chemical formula of the compound formed from nickel (II) ion and bromide is ${\text{NiBr}}_{\text{2}}\text{.}$

(i)

Interpretation Introduction

Interpretation:

The chemical formula of the compound formed from nickel (II) ion and nitrate has to be written.

Answer to Problem 10RQ

The chemical formula of the compound formed from nickel (II) ion and nitrate is $\text{Ni}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}\text{.}$

Explanation of Solution

Nickel (II) ion reacts with nitrate ion to form nickel (II) nitrate.  In nickel (II) nitrate, the charge on nickel cation $\left({\text{Ni}}^{\text{2+}}\right)$ is $\text{+2}\text{.}$  The charge on nitrate anion $\left({\text{NO}}_{\text{3}}{}^{\text{-}}\right)$ is $\text{-1}\text{.}$  The chemical formula of the compound formed from nickel (II) ion and nitrate is $\text{Ni}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}\text{.}$

(j)

Interpretation Introduction

Interpretation:

The chemical formula of the compound formed from nickel (II) ion and hypochlorite has to be written.

Answer to Problem 10RQ

The chemical formula of the compound formed from nickel (II) ion and hypochlorite is $\text{Ni}{\left(\text{ClO}\right)}_{\text{2}}\text{.}$

Explanation of Solution

Nickel (II) ion reacts with hypochlorite ion to form nickel (II) hypochlorite.  In nickel (II) hypochlorite, the charge on nickel cation $\left({\text{Ni}}^{\text{2+}}\right)$ is $\text{+2}\text{.}$  The charge on hypochlorite anion $\left({\text{ClO}}^{\text{-}}\right)$ is $\text{-1}\text{.}$  The chemical formula of the compound formed from nickel (II) ion and hypochlorite is $\text{Ni}{\left(\text{ClO}\right)}_{\text{2}}\text{.}$