Question

When a molecule of ethylenediamine (en) replaces two molecules of NH₃ in Co(NH₃)₆³⁺, what happens to the entropy of the system?

	A.	It increases.
	B.	It remains the same.
	C.	It decreases.

Answer 1

The answer is option A. it increases

entropy is the degree of randomness. entropy increases when disorderliness increases. disorderliness increases when no. of the particle in the reaction increases from reactant to product.

NH3 H3N NH3 NH2 2 NH3 H N NH2 H2N HzNT Co HEN NH3 NH3 H3N NH3 NH3 total particles 3 Total particles 2

in product no. of particles increases from two to three compare to the reactant, therefore, the disorderliness of the product increases as a result entropy increases