Chemistry
Answer
Polar covalent
Reason — Hydrogen chloride (HCl) is a polar covalent molecule because it is formed by sharing of electrons between hydrogen and chlorine atoms. However, chlorine is more electronegative than hydrogen, so it pulls the shared electrons closer to itself. This creates a partial negative charge on chlorine and a partial positive charge on hydrogen, making the molecule polar.
Related Questions
Explain why :
(a) hydrogen chloride gas is not collected over water.
(b) hydrogen chloride gas cannot be dried over quick lime.
(c) thick white fumes are formed when a glass rod dipped in NH4OH is brought near the mouth of a bottle full of HCl gas.
(d) HCl fumes in air.
With respect to the laboratory preparation of HCl gas, answer the following questions :
(a) Name the reactants used and the product(s) formed.
(b) Under what conditions do the reactants react?
(c) How is the gas identified?
(d) State the precautions to be taken.
Choose the correct answer:
Hydrogen chloride gas being highly soluble in water is dried by :
- Anhydrous calcium chloride
- Phosphorous pentaoxide
- Quick lime
- Conc. sulphuric acid.
Select the correct answer from A, B, C and D : The aim of the Fountain experiment is to prove that :
(A) HCl turns blue litmus red
(B) HCl is denser than air
(C) HCl is highly soluble in water
(D) HCl fumes in moist air.