alicirmanlimsbeth
Answered

Based on relative bond strengths, classify these reactions as endothermic (energy absorbed) or exothermic (energy released)

endothermic

B2+C2-->2BC

A+BC-->AB+C


exothermic

AB+C-->AC+B

A2+C2-->2AC

A2+B2-->2AB

Verified Answer :

W0lf93

Exothermic reaction is a chemical reaction that releases energy. This reaction releases heat energy or light .
In an endotermic reaction energy is used.
Enthaply is the heat energy change , delta H.
If the sum of the enthalpies of the reactans is greater than the products the reaction is exothermic. If the products side has a larger enthaply than the process is endothermic. So, if delta H is negative then the process is exothermic. If delta H is positive, than the process is endothermic.
Exothermic are: A+BC -> AB+C
A2+B2 -> 2AB
Endothermic are:AB+C -> AC+B
A2 + C2 -> 2AC
B2+C2 -> 2BC

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