ΔH is positive for what type of reactions?Question 1AnswerA.ExothermicB.OxidationC.DisplacementD.Endothermic

To determine for what type of reactions ΔH is positive, we should first understand what ΔH (the change in enthalpy) represents in chemistry.

Explanation

1. Exothermic Reaction: In these reactions, energy is released, and thus, ΔH is negative.
2. Endothermic Reaction: These reactions absorb energy from the surroundings, leading to a positive ΔH.
3. Oxidation and Displacement Reactions: These terms refer to specific types of chemical reactions that can be either exothermic or endothermic, depending on the specific reaction and conditions. Therefore, they do not universally indicate a positive ΔH.

Conclusion

Based on the above explanation, the correct answer to the question is:

Final Answer

D. Endothermic