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Zina [86]
3 years ago
7

How does the potential-energy diagram for a reaction indicate whether the reaction is endothermic or exothermic?

Chemistry
2 answers:
AnnZ [28]3 years ago
5 0

Answer:

I am pretty sure it is An exothermic reaction has reactants that are lower in energy than products because energy is released to form the products.

Explanation:

luda_lava [24]3 years ago
5 0

Answer:

A: An endothermic reaction has reactants that are lower in energy than products because energy is absorbed to form the products.

Explanation:

I just did this and got it right

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Answer:-ΔG=-101.5KJ

Explanation:We have to calculate ΔG for the reaction  so using the formula given in the equation we can calculate the \Delta G for the reaction.

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\Delta H=-137.5\\ \Delta S=-120J/K\\ \Delta S=-0.120KJ/K\\ T=25^{.C}\\ T=273+25=298 K\\ \Delta G=?\\ \Delta G=\Delta H-T\Delta S\\\Delta G=-137.5KJ-(278\times -0.120)\\ \Delta G=-137.5+35.76\\\Delta G=-101.74\\\Delta G=Negative

After calculating forΔG we found that the value ofΔG is negative and its value is -101.74KJ

 For a  reaction to be spontaneous the value of \Delta G \ must be negative .

As the ΔG for the given reaction is is negative so the reaction will be spontaneous in nature.

In this reaction since the entropy of reaction is positive and hence when we increase the temperature term then the overall term TΔS would become more positive  and hence the value of ΔG would be less negative .

Hence the value of ΔG  would become more positive with the increase in temperature.

So we found the value of ΔG to be -101.74KJ

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