Which of the following reactions would result in increased entropy?

A option

Explanation:

Because recatants are in solid form having less enetropy and products are liquid form having more entropy

While other options reactants and products are in same phase gas phase having same entropy

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.