Question

why does HCL gas not change the colour of dry litmus paper​

Answer 1

Answer:

Dry HCL it does not dissociate to give H+ ions. Acids dissociate to give ions only in the aqueous solution.

Explanation:

In this, HCL is not in the aqueous form nor the litmus paper is wet, so the colour of the litmus paper does not change.

Answer 2

$\huge\bold{Answer:-}$

Dry HCL does not change colour of dry litmus paper because it has no hydrogen ion , H+ (aq) ions , in it which can impart acidic properties to it.

Know More :-

Acids are those chemical substances which have a sour taste and can conduct electricity.

Acids are two types -

Weak Acid (organic acids) - Those acids which are present naturally in organisms .

ex = Acetic acid in vinegar , citric acid in lemons and oranges, lactic acid in sour milk etc .

Strong Acids ( mineral acid) -

The acids prepared from the minerals of the earth . .

ex = Hydrochloric acid, sulphuric acid ,

Nitric acid etc .

Properties of Acids :-

• Acids have sour taste.

• Acid turns blue litmus into red.

• Acids solutions conduct electricity.

• Acids react with metals to form hydrogen gas .

• Acids react with metal carbonate to form carbon dioxide gas .

• Acids react with bases or alkalis to form salt and water .

• Acids are corrosive in nature.

• Acids react with metal oxides to form salt and water.