12. Choose the best answer below. Which of the following statements concerning r

Question

12. Choose the best answer below. Which of the following statements concerning reaction enthalpy (AH) is TRUE? A) An endothermic reaction has a negative ??, and increases the B) An exothermic reaction has a negative ??, and increases the C) An exothermic reaction has a negative ??, and decreases the D) An endothermic reaction has a negative ??, and decreases the E) An endothermic reaction has a positive AH, and feels warm (or hot) to temperature of the surroundings temperature of the surroundings temperature of the surroundings temperature of the surroundings the touch

Explanation / Answer

exothermic reaction releases heat

So, it increases temperature of surrounding

delta H is negative

endothermic reaction absorbs heat

So, it decreases temperature of surrounding

delta H is positive

Answer: B

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