Q. 11.6 - An Introduction to General, Organic, and Biological Chemistry

Question

Match each of the following physical and chemical properties with cyclohexane, $C_6{H}_{12}$, or calcium nitrate, data-custom-editor="chemistry" $\mathrm{Ca}{\left({\mathrm{NO}}_3\right)}_2$:

a. melts at $500 °C$

b. is insoluble in water

c. does not burn in air

d. is a liquid at room temperature

Step-by-Step Solution

Answer

(a) The compound that melts at $500°C$ is calcium nitrate

(b) The compound that is insoluble in water is ${\mathrm{C}}_6{\mathrm{H}}_{12}$

(c) The compound that does not burn in the air is calcium nitrate

(d) The compound that is a liquid at room temperature is ${\mathrm{C}}_6{\mathrm{H}}_{12}$

Part (a) Step1: Given information

We need to find that out of given compounds i.e. calcium nitrate and $cyclohexane$ which melts at $500°C$

Part (a) Step 2: Explanation

We know that

Calcium nitrate is an inorganic compound and $cyclohexane$ is an organic compound.

And inorganic compounds have a relatively high melting point.

Therefore, The compound that melts at $500°C$ is calcium nitrate 

Part (b) Step1: Given information

We need to find that out of given compounds i.e. calcium nitrate and $cyclohexane$ which is insoluble in water

Part (b) Step 2: Explanation

'We know that

Calcium nitrate is an inorganic compound and $cyclohexane$ is an organic compound.

And organic compounds are relatively insoluble in water

Therefore, The compound that is insoluble in water is $cyclohexane$ 

Part (c) Step1: Given information

We need to find that out of given compounds i.e. calcium nitrate and $cyclohexane$ which does not burn in the air

Part (c) Step 2: Explanation

We know that

Calcium nitrate is an inorganic compound and $cyclohexane$ is an organic compound.

And inorganic compounds do not burn in the air 

Therefore, The compound that does not burn in the air is calcium nitrate 

Part (d) Step1: Given information

We need to find that out of given compounds i.e. calcium nitrate and $cyclohexane$ which is a liquid at room temperature 

Part (d) Step 2: Explanation

We know that

Calcium nitrate is an inorganic compound and $cyclohexane$ is an organic compound.

Calcium nitrate is a solid. Most of the higher cycloalkanes are liquids at room temperature. 

Therefore, The compound that is a liquid at room temperature is $cyclohexane$