Question

Classify the chemical reactions as exothermic, endothermic, or constant:

A. Exothermic
B. Endothermic
C. Constant

(?) A → B

(?) A + B → C + 60J

(?) X → W - 30J

(?) C + O2 → CO2 + 5J

(?) H2 + O2 + 30J → H2O2

(?) H2O + SO3 - 50J → H2SO4

(?) HCl + KOH → KCl + H2O

(?) x + y → w + 120J

Answer 1

Exothermic reactions release heat while endothermic reactions absorb heat.

Step-by-step explanation:

A chemical reaction that releases heat is exothermic. A chemical reaction that absorbs heat is an endothermic reaction.