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From observing the reaction, what would you predict to be delta H and delta S for the hydration of CaO? Warning. This is a tricky question. To help you determine the correct answer, the chemical reaction involving CaO and water is written below. Remember to us the rules you learned about assigning the sign of delta S

2CaO(s) + H2O(l) —> 2Ca(OH)2(s)

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Based on the nature ofbthe reaction, entropy (ΔS) increases while enthalpy (ΔH) decreases.

What are entropy and enthalpy changes?

Entropy changes, ΔS, refers to change in the degree of the disorderliness of a substance.

When substances become more random, entropy increases and vice versa.

For example, change of state from solid to liquid or gas results in increase in entropy.

Enthalpy changes, ΔH, refers to the changes in heat content of a substance, either a decrease or increase.

Enthalpy is negative when heat is lost and positive ehen heat is gained.

The enthalpy and entropy changes in the given reaction below is as follows:

2CaO(s) + H2O(l) —> 2Ca(OH)2(s)

Entropy, ΔS increases as the substance dissolves in water.

Enthalpy, ΔH, decreases as the substances gives off heat.

Therefore, in the given reaction entropy (ΔS) increases while enthalpy (ΔH) decreases.

Learn more about enthalpy and entropy at: https://brainly.com/question/1282789

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