What is acids? Give any two examples.
Acids are those chemical substances that gives hydrogen ions when dissolved in water.
For example: HCl -----> H+ + Cl-
H2SO4 -----> 2H+ + SO4--
Solution of ammonia is a weak aid, Why?
Ammonium hydroxide or solution of ammonia (NH4 OH) is weak alkali because it produce the low concentration of hydroxyl ions in the aqueous solution( which dissolved in water) .