Chapter 20, Problem 61A

Interpretation Introduction

Interpretation: Of the given molecules, the one which is not organic is to be given.

Concept introduction: Organic molecules are the ones that contain carbon and hydrogen atoms bonded to each other. They may also contain heteroatom such as Nitrogen, Sulfur, Oxygen etc.

Answer to Problem 61A

d. Magnesium sulfate is not an organic molecule.

Explanation of Solution

The chemical formula of Magnesium sulfate is $MgS{O}_4$ .It does not contain carbon and hydrogen bonded to each other whereas the rest of molecules contain carbon and hydrogen bonded to each other. The chemical formula of methanol is $C{H}_{3}OH$ , of acetone is $C{H}_{3}COC{H}_3$ and that of acetic acid is $C{H}_{3}COOH$

and their structures are as follows:

  

From the structures it is evident that methanol, acetone and acetic acid are organic molecules.

Conclusion

Of the given molecules, Magnesium sulfate is not an organic molecule whereas the rest of the molecules are organic molecules.