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Author Question: Suppose reaction A involves the making of bonds and 22.5 J of energy, reaction B involves the ... (Read 159 times)

Brittanyd9008

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on: Jul 28, 2018
Suppose reaction A involves the making of bonds and 22.5 J of energy, reaction B involves the breaking of bonds and 40.0 J of energy, and reaction C involves the making of bonds and 125.0 J of energy.
 
  What is the overall A + B + C reaction energy? Is this an exothermic or an endothermic reaction? Explain.

Question 2

Ozone is an unnatural form of oxygen.
 
  What will be an ideal response?


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amit

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Reply #1 on: Jul 28, 2018
Answer to Question 1

In making bonds, the total energy release was 22.5 J + 125 J = 147.5 J. This is
more than the energy supplied to break bonds, 40.0 J. Overall in this reaction, bonds are
made and net energy is supplied by the chemical system to the outside. This is an
exothermic reaction, because energy of 107.5 J = 147.5 J - 40.0 J can be extracted from
the system when the reaction occurs.

Answer to Question 2

It would be hard to call it unnatural, because it does occur in nature without
any human interference. It is true, however, that humans can increase or decrease the amount
of ozone compared to what would have been the case. in nature free of humans' effects


Brittanyd9008

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Reply #2 on: Jul 28, 2018
Thank you!


amit

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Reply #3 on: Jul 28, 2018
Always glad to help...


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