Q. 11.2 - An Introduction to General, Organic, and Biological Chemistry

Question

Identify each of the following as a formula of an organic or inorganic compound. For an organic compound, indicate if represented as molecular formula, expanded, or condensed structural formula:

a. ${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6$

b. $K_{3}P{O}_4$

c. ${\mathrm{I}}_2$

d.

e. $C{H}_3-C{H}_2-C{H}_2-C{H}_2-C{H}_3$

f. ${\mathrm{C}}_4{\mathrm{H}}_9\mathrm{Br}$

Step-by-Step Solution

Answer

(a) The given compound i.e. $C_6{H}_{12}{O}_6$ is an organic compound and represents a molecular formula

(b) The given compound i.e. ${\mathrm{K}}_3{\mathrm{PO}}_4$ is an inorganic compound

(c) The given compound i.e. ${\mathrm{I}}_2$ is an inorganic compound

(d) The given compound i.e.  is an organic compound and represents expanded structural formula

(e) The given compound i.e. ${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_3$ is an organic compound and represents condensed structural formula

(f) The given compound i.e. ${\mathrm{C}}_4{\mathrm{H}}_9\mathrm{Br}$ is an organic formula and represents a molecular formula

Part (a) Step 1: Given information

We need to find whether the given compound i.e. ${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6$ is an organic or inorganic compound.

Part (a) Step 2: Explanation

We know that

The given compound contains carbon and hydrogen 

Therefore, The given compound is an organic compound 

And as it only shows the no. of atoms of each element 

So, it represents a molecular formula

Part (b) Step 1: Given information

We need to find whether the given compound i.e. ${\mathrm{K}}_3{\mathrm{PO}}_4$ is an organic or inorganic compound. 

Part (b) Step 2: Explanation

We know that

The given compound does not contain carbon and hydrogen 

Therefore, 

The given compound is an inorganic compound 

Part (c) Step 1: Given information

We need to find whether the given compound i.e. ${\mathrm{I}}_2$ is an organic or inorganic compound. 

Part (c) Step 2: Explanation

We know that

The given compound does not contain carbon and hydrogen 

Therefore, 

The given compound is an inorganic compound 

Part (d) Step 1: Given information

We need to find whether the given compound i.e.  is an organic or inorganic compound.

Part (d) Step 2: Explanation

We know that

The given compound contains carbon and hydrogen 

Therefore, The given compound is an organic compound 

And as it shows the no. of atoms of each element and bonds between them 

So, it represents an expanded structural formula

Part (e) Step 1: Given information

We need to find whether the given compound i.e. $C{H}_3-C{H}_2-C{H}_2-C{H}_2-C{H}_3$ is an organic or inorganic compound. 

Part (e) Step 2: Explanation

We know that

The given compound contains carbon and hydrogen 

Therefore, The given compound is an organic compound 

And as it shows the no. of atoms of each element and the bonds between them

So, it represents a condensed structural formula

Part (f) Step 1: Given information

We need to find whether the given compound i.e. ${\mathrm{C}}_4{\mathrm{H}}_9\mathrm{Br}$ is an organic or inorganic compound. 

Part (f) Step 2: Explanation

We know that

The given compound contains carbon and hydrogen 

Therefore, The given compound is an organic compound 

And as it only shows the no. of atoms of each element 

So, it represents a molecular formula