The correct statement regarding the following energy diagrams is
Reaction M is faster and less exothermic than reaction N
Reaction M is slower and less exothermic than reaction N
Reaction M is faster and more exothermic than reaction N
Reaction M is slower and more exothermic than reaction N
The amount of electrolytes required to coagulate a given amount of AgI colloidal solution (-ve charge) will be in the order
NaNO3 > Al2(NO3)3 > Ba(NO3)2
Al2(NO3)3 > Ba(NO3)2 > NaNO3
Al2(NO3)2 > NaNO3 > Ba(NO3)2
NaNO3 > Ba(NO3)2 > Al2(NO3)3
The decomposition of hydrogen peroxide can be slowed by the addition of acetamide. The latter acts as a
detainer
stopper
promoter
inhibitor
The formation of colloid from suspension is
peptisation
condensation
fragmentation
sedimentation
Which mixture of the solutions will lead to the formation of negatively charged colloidal [Agl]l– sol ?
50 mL of 1 M AgNO3 + 50 mL of 2 M KI
50 mL of 2 M AgNO3 + 50 mL of 1.5 M KI
50 mL of 0.1M M AgNO3 + 50 mL of 0.1 M KI
50 mL of 1 M AgNO3 + 50 mL of 1.5 M KI
A.
50 mL of 1 M AgNO3 + 50 mL of 2 M KI
Generally charge present on the colloid is due to adsorption of common ion from dispersion medium. Millimole of KI is maximum in option (2) (50 × 2 = 100) so act as solvent and anion I– is adsorbed by the colloid AgI formed