Question

What can you conclude about these two reactions based on the chemical equations? Reaction A: 6CO2(g) + 6H2O(l) + sunlight → C6H12O6(aq) + 6O2(g) Reaction B: 2H2(g) + O2(g) → 2H2O(g) + energy A. Reactions A and B are both exothermic. B. Reaction A is endothermic, and reaction B is exothermic. C. Reactions A and B are both endothermic. D. Reaction A is exothermic, and reaction B is endothermic.

Answer 1

Answer: Answer: B. Reaction A is endothermic, and reaction B is exothermic

Explanation:

Endothermic reaction is a reaction that absorb energy from its surrounding.

Reaction A : 6H2O(l) + sunlight

Exothermic reaction is a reaction that releases energy to the surrounding.

Reaction B → 2H2O(g) + energy

Answer 2

The correct answer is B: reaction A is endothermic and reaction B is exothermic.

Step-by-step explanation:

A: 6CO2(g) + 6H2O(l) + sunlight → C6H12O6(aq) + 6O2(g): is the photosynthesis reaction. Photosynthesis is an endothermic reaction, therefore it needs energy (sunlight) to take place.

B: 2H2(g) + O2(g) → 2H2O(g) + energy: is the formation of water. It is an exothermic reaction which releases energy as a result of the reaction.

So, the answer is option (B): Reaction A is Endothermic and Reaction B is Exothermic.