Advertisements
Advertisements
Question
Explain, why (or give reasons for)
A solution of HCl gas in water turns blue litmus red and conducts electricity, while HCI gas dissolves in toluene and it has no effect on litmus and does not conduct electricity.
Advertisements
Solution
A solution of HCI gas in water turns blue litmus red and conducts electricity, while HCI gas dissolves in toluene and it has no effect because hydrochloric acid is a polar covalent compound. In polar solvent like water it ionizes to give hydrogen ions and also facilitates the movement of electrons to conduct electricity while it does not ionize in organic solvents like toluene.
APPEARS IN
RELATED QUESTIONS
Explain, why (or give reasons for)
Only a very dilute solution of hydrogen chloride in water can be concentrated by boiling the solution while a very concentrated solution would become less concentrated when boiled.
Explain, why (or give reasons for)
An aqeous solution of chlorine is acidic is nature.
Write the uses of hydrochIoric acid.
How can you prove that hydrochloric acid contain :
Hydrogen
Fill in the blank:
Aqua-regia is a mixture of ___________ .
Fill in the blank:
The white precipitate of lead chloride is soluble in _________
State one reason why tap water is not used to prepare a solution of silver nitrate in the laboratory.
In the laboratory preparation of hydrochloric acid, HCl gas is dissolved in water.
- Draw a diagram to show the arrangement used for the absorption of HCl gas in water.
- State why such an arrangement is necessary? Give two reasons for the same.
- Write the chemical equation for the laboratory preparation of HCl gas when the reaction is:
- Below 200°C
- Above 200°C
The following question is pertaining to the laboratory preparation of hydrogen chloride gas.
State a safety precaution you would take during the preparation of hydrochloric acid.
State your observation when :
Dilute hydrochloric acid is added to copper carbonate.
