Q. 11.5 - An Introduction to General, Organic, and Biological Chemistry

Question

Match each of the following physical and chemical properties with ethane, ${\mathrm{C}}_2{\mathrm{H}}_6$, or sodium bromide, $\mathrm{NaBr}$:

a. boils at $-89 °C$

b. burns vigorously in air

c. is a solid at $250 °C$ 

d. dissolves in water

Step-by-Step Solution

Answer

(a) The compound that boils at $-89°C$ is ethane

(b) The compound that burns vigorously in air is ethane

(c) The compound that is a solid at $250°C$ is sodium bromide

(d) The compound that dissolves in water is sodium bromide

Part (a) Step1: Given information

We need to find that out of given compounds i.e. sodium bromide and ethane which boils at  $-89°C$

Part (a) Step 2: Explanation

We know that

Sodium bromide is an inorganic compound and ethane is an organic compound.

And organic compounds have a relatively low boiling point

Therefore,  The compound that boils at $-89°C$ is ethane 

Part (b) Step1: Given information

We need to find that out of given compounds i.e. sodium bromide and ethane which burns vigorously in air 

Part (b) Step 2: Explanation

We know that

Sodium bromide is an inorganic compound and ethane is an organic compound.

And organic compounds burn vigorously in the air 

Therefore, The compound that burns vigorously in air is ethane 

Part (c) Step1: Given information

We need to find that out of given compounds i.e. sodium bromide and ethane which is solid at $250°C$

Part (c) Step 2: Explanation

We know that

Sodium bromide is an inorganic compound and ethane is an organic compound.

And inorganic compounds are solid at high temperatures

Therefore, The compound that is a solid at $250°C$ is sodium bromide 

Part (d) Step1: Given information

We need to find that out of given compounds i.e. sodium bromide and ethane which dissolves in water 

Part (d) Step 2: Explanation

We know that

Sodium bromide is an inorganic compound and ethane is an organic compound.

And inorganic compounds dissolve in water 

Therefore, The compound that dissolves in water is sodium bromide