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As CaCl2 dissolves in water, and warms the solution,
a. delta H is positive, and delta S is negative
b. delta H is negative, and delta S is negative
c. delta H is negative, and delta S is positive
d. delta H is positive, and delta S is positive

Respuesta :

The answer should be c because delta h is negative and delays s is positive for sure that’s what I learned

As [tex]CaCl_{2}[/tex] dissolves in water, and warms the solution, delta H is negative, and delta S is positive.

What are exothermic and endothermic reactions?

Chemical reactions that release energy are called exothermic. In exothermic reactions, more energy is released when the bonds are formed in the products which is used to break the bonds in the reactants. Chemical reactions that absorb (or use) energy are called endothermic.

The dissociation of [tex]CaCl_{2}[/tex] in water is

[tex]CaCl_{2}+H_{2}O(l)=Ca_{++}+2Cl_{-}+H_{2}O(l)[/tex]

As the solution is warm, change in Enthalpy is exothermic ΔH < 0.

(ΔH is negative, so the dissociation is exothermic).

As there are produced 2 ions from 1 solid molecule, the disorder is increasing and ΔS > 0

Hence, option C is correct.

Learn more about exothermic and endothermic reactions here:

https://brainly.com/question/9799465?

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