Chemistry - Complete Pblock- Question with Solution | TestHub

Question Explanation: Identify the correct statement(s) regarding the physical properties of Chlorine ( ${\mathrm{Cl}}_2$ ).

Concept: Physical properties of Chlorine ( ${\mathrm{Cl}}_2$ ).

Solution:

A. It is a greenish yellow gas (Correct).

B. It is 2.5 times heavier than air (Correct - Molar mass of ${\mathrm{Cl}}_2$ is $71\mathrm{g}/\mathrm{mol}$, Air $\sim 29\mathrm{g}/\mathrm{mol}.71/29\approx$ 2.45).

C. It is not soluble in water (Incorrect - It is soluble and reacts with water: ${\mathrm{Cl}}_2+{\mathrm{H}}_2\mathrm{O}\to \mathrm{HCl}+\mathrm{HOCl}$ ).

D. Having pleasant smell (Incorrect - It has a pungent and suffocating smell).

Final Answer: It is a greenish yellow gas and It is 2.5 times heavier than air