(1) In the reaction of dil. HCl and Shahabad tile, CO2 effervescence is formed slowly. On the other hand, C2 effervescence forms at faster speed with the powder of Shahabad tile.
(2) The above observation indicates that the rate of a reaction depends upon the size of the particles of the reactants taking part in the reaction. Smaller the size of the reactant particles taking part in a reaction faster will be the rate of reaètion.
