HELP Read the following reactions.

Reaction 1: NaCl(s) → Na+(aq) + Cl−
Reaction 2: CaCO3(s) → CaO(s) + CO2(g)

Which reaction leads to an increase in entropy? (4 points)
Only Reaction 1
Only Reaction 2
Both Reaction 1 and 2
Neither Reaction 1 nor 2

The correct answer is: Only Reaction 1.

Explanation:

Ok, allow us to define what entropy is: entropy could be a measure of the random activity in an exceedingly system, and there are several factors which may affect the number of entropy during a system - as an example after you increase temperature, you increase entropy.

In this case,

Reaction 1: NaCl(s) → Na+(aq)+Cl- (aq): during this reaction you're solvating the atoms of Na+ and Cl-, or in other words, you're passing a compound from the solid state to the liquid state, which causes the entropy to extend. Liquids have more energy and entropy than solids.

Reaction 2: N2(g) + 3H2(g) → 2NH3(g): during this case you're getting a gaseous product from gaseous reactants, and although there's positive entropy, it doesn't increase.

took the test

[A] Only Reaction 1.

EXPLANATION:

We know that Entropy also increases when solid reactants form liquid products. Entropy increases when a substance is broken up into multiple parts. The process of dissolving increases entropy because the solute particles become separated from one another when a solution is formed. Entropy increases as temperature increases.

So, Correct choice - [A] Only Reaction 1.

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explanation: