Question

State the general properties of acids.

Answer 1

Acids

• An acid is any Hydrogen- containing substance that is capable of donating a proton to another substance.
• According to Arrhenius's concept of acids, acid generates ${\mathrm{H}}^{+}$ ions in a solution.
• $\mathrm{HCl}\left(\mathrm{aq}\right)\rightleftharpoons {\mathrm{H}}^{+}\left(\mathrm{aq}\right)+{\mathrm{Cl}}^{-}\left(\mathrm{aq}\right)$
• Example - Hydrochloric acid ($\mathrm{HCl}$)

The physical properties of acids are as follows:

• Acids have a sour taste.
• They turn blue litmus red.
• They have a pH of less than 7.
• The mineral acids are colorless liquids, but sometimes sulphuric acid becomes yellow due to impurities.
• They are soluble in water.
• Strong acid causes burn on the skin.
• Strong acids also destroy the fabric.
• Acids are electrolytes.