Answer: [tex]CaBr_2(s)\rightarrow Ca^{2+}(aq)+2Br^-(aq)[/tex]
Explanation:
Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.
1. [tex]Ag^+(aq)+Cl^-(aq)\rightarrow AgCl(s)[/tex]
The fast moving ions are converting to solid product, thus the entropy decreases.
2. [tex]H_2O(g)\rightarrow H_2O(l)[/tex]
The fast moving gas is converting to liquid product, thus the entropy decreases.
3. [tex]CaBr_2(s)\rightarrow Ca^{2+}(aq)+2Br^-(aq)[/tex]
The energy is absorbed by the reactants and the solid reactants are converting to fast moving ions, thus the entropy increases.
4. [tex]CO_2(g)\rightarrow CO_2(s)[/tex]
The fast moving gas is converting to solid product, thus the entropy decreases.
5. [tex]N_2(g)+3F_2(g)\rightarrow 2NF_3(g)[/tex]
4 moles of gas is converting to 2 moles of gaseous product , thus the entropy decreases.
