Use the graphs if you need a visual to help answer the following questions.  Compare and contrast endothermic and exothermic. Hint:  Start with the definition of the 2 terms. How is exothermic different from endothermic and what characteristics do they share? Explain this formula:          Energy change = Energy in (reactants)  -   Energy out(products)  Hints below:  a.  When will this formula have a negative outcome and when will it have a positive outcome?  b.  Identify the negative and positive outcomes as endothermic or exothermic.

World of Chemistry, 3rd edition
3rd Edition
ISBN:9781133109655
Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Chapter17: Equilibrium
Section: Chapter Questions
Problem 12A
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Use the graphs if you need a visual to help answer the following questions. 

  1. Compare and contrast endothermic and exothermic. Hint:  Start with the definition of the 2 terms. How is exothermic different from endothermic and what characteristics do they share?



  1. Explain this formula:          Energy change = Energy in (reactants)  -   Energy out(products) 

Hints below: 

a.  When will this formula have a negative outcome and when will it have a positive outcome? 

b.  Identify the negative and positive outcomes as endothermic or exothermic. 

Energy (kJ)
An exothermic reaction
reactants
energy given
out to the
surroundings
ΔΗ
products
Reaction time
Energy (kJ)
An endothermic reaction
reactants
products
energy taken
in from the
surroundings
ΔΗ
Reaction time
Transcribed Image Text:Energy (kJ) An exothermic reaction reactants energy given out to the surroundings ΔΗ products Reaction time Energy (kJ) An endothermic reaction reactants products energy taken in from the surroundings ΔΗ Reaction time
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