Label each of the following as being an example of an endothermic or an exothermic reaction.a. a reaction where the surroundings decrease in temperature from 25 oC to 19 oC Blank 1 Question 26b. N2(g) + 3 H2(g) --> 2 NH3(g) ΔH = -92.4 kJ
Question
Label each of the following as being an example of an endothermic or an exothermic reaction.a. a reaction where the surroundings decrease in temperature from 25 oC to 19 oC Blank 1 Question 26b. N2(g) + 3 H2(g) --> 2 NH3(g) ΔH = -92.4 kJ
Solution
a. This is an example of an endothermic reaction. In an endothermic reaction, the system absorbs heat from the surroundings, causing the surroundings to decrease in temperature.
b. This is an example of an exothermic reaction. The negative ΔH value indicates that the reaction releases heat. In an exothermic reaction, heat is released to the surroundings, making the ΔH negative.
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