A first-order reaction is 50% completed in 40 minutes at 300 K and in 20 minutes at 320 K. Calculate the activation energy of the reaction.
(Given: log 2 = 0.3010, log 4 = 0.6021, R = 8.314 JK–1 mol–1)
What happens when
A freshly prepared precipitate of Fe(OH)3 is shaken with a small amount of FeCl3 solution?
When freshly precipitated Fe(OH)3 is shaken with the little amount of dilute solution of FeCl3(electrolyte).
Peptization process (ions of the electrolyte are adsorbed by the precipitate particles) takes place by converting the Fe(OH)3 precipitate into a colloidal solution positively charged solution of Fe(OH)3.