Chapter 8.5, Problem 76SSC

Interpretation Introduction

Interpretation:

Whether a compound made of hydrogen and sulfur atoms is polar or non polar needs to be determined.

Concept introduction:

Covalent bonds are chemical bonds where two or more atoms share one or more electron pairs. Polar covalent bonds are formed when there is small electronegtaivity difference between the bonded atoms. This results in the formation of partial positive and negative charges on the atoms.

Answer to Problem 76SSC

Compound that is made of hydrogen and sulfur is polar.

Explanation of Solution

A compound is made of hydrogen and sulfur is ${\text{H}}_{\text{2}}\text{S}$. Structure of ${\text{H}}_{\text{2}}\text{S}$is as follows:

From above structure it is seen that ${\text{H}}_{\text{2}}\text{S}$ has two bond pairs and two lone pairs. Thus, molecular shape of ${\text{H}}_{\text{2}}\text{S}$ is bent. Therefore, two bond dipoles do not cancel each other. Thus, it is a polar molecule.

Conclusion

Non polar molecules are dissolved only non-polar solvent and they are not attracted by electric field.