Question

part 2 of 3
are the reactants or products lower in energy?
reactants
products

part 3 of 3
is the reaction endothermic or exothermic?
endothermic
exothermic

Explanation:

Part 2 of 3

To determine if reactants or products have lower energy, we recall that in an exothermic reaction, energy is released, meaning products have lower energy than reactants. In an endothermic reaction, energy is absorbed, so reactants have lower energy than products. But since this is part 2 (likely leading to part 3 about exo/endothermic), if we assume the context (e.g., if part 3 is about exothermic, products are lower). However, typically, to answer this, we use the energy change: if \( \Delta H < 0 \) (exothermic), products have lower energy; if \( \Delta H>0 \) (endothermic), reactants have lower. But since the options are reactants or products, and often in such sequences, if part 3 is about exothermic, products are lower. But generally, the key is: in exothermic, products lower; endothermic, reactants lower. Assuming the reaction is exothermic (common in such problems), products are lower.

An exothermic reaction releases energy (products have lower energy than reactants, \( \Delta H < 0 \)). An endothermic reaction absorbs energy (reactants have lower energy, \( \Delta H>0 \)). From part 2, if products are lower in energy, the reaction is exothermic (since energy is released when going from higher - energy reactants to lower - energy products).

Answer:

products

Part 3 of 3