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?
Give Reason:
Dioxygen is a gas while Sulphur is a solid at room temperature.
Oxygen is smaller in size and thus due to its small size complete its octet by forming pπ = p bond. Therefore, O2 is a discrte molecule and the intermolecular forces of attraction are weak vander waals forces. Hence, O2 is a gas. While sulphur is large in size, cannot form p= p bonds. Therefore, in order to gain stability, it exists as S8 which is a solid.