Chapter 2, Problem 120GQ

(a)

Interpretation Introduction

Interpretation: For the given three compounds, the names are needed to be determined.

Concept introduction:

• Naming of molecular binary compounds (two element compounds),

The binary compounds of hydrogen with nonmetals are named as hydrogen followed by nonmetals name in ‘ide’ form (add ‘ide’ into stem of the name).

The binary compounds formed by combination of group 4A-7A elements are named as putting the first name as early group elements and last name as late group element in ‘ide’ form. The more than one number of an element is named by adding prefix as “di-, tri-, tetra-, penta- and so on.

• Naming of ions:

  Positive ions (cations) are named as metal name, example: aluminum for aluminum cation.

  But, for the transition metals the ionic charge also included by roman numerals with the naming of compound.

  Negative ions (anions) are named by adding ‘ide’ to the stem of the nonmetal element, from which the anion is formed, example: chloride, bromide, etc.

• Molar masses of $Ba{F}_2$,${\text{SiCl}}_4$ and $NiB{r}_2$ are 175.3g, 169.8 and 218.53g respectively.
• Conversion formula for number moles of an atom into mass,

    $Molarmass\times Numberofmoles=Massingrams$ 

(b)

Interpretation Introduction

Interpretation: For the given three compounds, the ionic and molecular compounds have to be identified.

Concept introduction:

• Naming of molecular binary compounds (two element compounds),

The binary compounds of hydrogen with nonmetals are named as hydrogen followed by nonmetals name in ‘ide’ form (add ‘ide’ into stem of the name).

The binary compounds formed by combination of group 4A-7A elements are named as putting the first name as early group elements and last name as late group element in ‘ide’ form. The more than one number of an element is named by adding prefix as “di-, tri-, tetra-, penta- and so on.

• Naming of ions:

Positive ions (cations) are named as metal name, example: aluminum for aluminum cation.

But, for the transition metals the ionic charge also included by roman numerals with the naming of compound.

Negative ions (anions) are named by adding ‘ide’ to the stem of the nonmetal element, from which the anion is formed, example: chloride, bromide, etc.

• Molar masses of $Ba{F}_2$,${\text{SiCl}}_4$ and $NiB{r}_2$ are 175.3g, 169.8 and 218.53g respectively.
• Conversion formula for number moles of an atom into mass,

    $Molarmass\times Numberofmoles=Massingrams$ 

(c)

Interpretation Introduction

Interpretation: For given three compounds, the largest mass containing compound are needed to be determined.

Concept introduction:

• Naming of molecular binary compounds (two element compounds),

The binary compounds of hydrogen with nonmetals are named as hydrogen followed by nonmetals name in ‘ide’ form (add ‘ide’ into stem of the name).

The binary compounds formed by combination of group 4A-7A elements are named as putting the first name as early group elements and last name as late group element in ‘ide’ form. The more than one number of an element is named by adding prefix as “di-, tr-, tetra-, penta- and so on.

• Naming of ions:

  Positive ions (cations) are named as metal name, example: aluminum for aluminum cation.

  But, for the transition metals the ionic charge also included by roman numerals with the naming of compound.

  Negative ions (anions) are named by adding ‘ide’ to the stem of the nonmetal element, from which the anion is formed, example: chloride, bromide, etc.

• Molar masses of $Ba{F}_2$,${\text{SiCl}}_4$ and $NiB{r}_2$ are 175.3g, 169.8 and 218.53g respectively.
• Conversion formula for number moles of an atom into mass,

    $Molarmass\times Numberofmoles=Massingrams$