Chapter 22, Problem 44E

Interpretation Introduction

(a)

Interpretation:

To write the formula of calcium sulfate dihydrate.

Concept introduction:

To write the name of a compound, the name of the cation is written first and then name of the anion. For naming oxyanion ‘ate’ suffix is generally used. For example ${\text{ClO}}_3{}^{-}$ (chlorate). ‘ite’ suffix is generally used for anion that has one less oxygen than chlorate ion. For example ${\text{ClO}}_2{}^{-}$ (chlorite) etc.

Interpretation Introduction

(b)

Interpretation:

To write the formula of hydro-sulfuric acid.

Concept introduction:

The name of an acid depends on the anion.The guidelines to be followed to assign name to acids are-

For acid having two elements (Hydrogen and non-metal), prefix ‘hydro’ and suffix ‘ic acid’ should be used.

So, construction of name of acids is,

Hydro+ First syllable of anion+ ic acid

Interpretation Introduction

(c)

Interpretation:

To write the formula of sodium hydrogen sulfate.

Concept introduction:

To write the name of a compound, the name of the cation is written first and then name of the anion. For naming oxyanion ‘ate’ suffix is generally used. For example ${\text{ClO}}_3{}^{-}$ (chlorate). ‘ite’ suffix is generally used for anion that has one less oxygen than chlorate ion. For example ${\text{ClO}}_2{}^{-}$ (chlorite) etc.

Interpretation Introduction

(d)

Interpretation:

To write the formula of disulfuric acid.

Concept introduction:

To write the name of a compound, the name of the cation is written first and then name of the anion. For naming oxyanion ‘ate’ suffix is generally used. For example ${\text{ClO}}_3{}^{-}$ (chlorate). ‘ite’ suffix is generally used for anion that has one less oxygen than chlorate ion. For example ${\text{ClO}}_2{}^{-}$ (chlorite) etc.