Multiple Choice
In a reaction energy diagram, which label represents the overall enthalpy change (ΔH), and how can you determine if the reaction is exothermic or endothermic?
31
views
8. Thermochemistry
Endothermic & Exothermic Reactions
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In which type of chemical reaction is heat absorbed from the surroundings?
A
Endothermic reaction
B
Exothermic reaction
C
Neutralization reaction
D
Combustion reaction
Verified step by step guidance1
Understand the difference between endothermic and exothermic reactions: Endothermic reactions absorb heat from the surroundings, while exothermic reactions release heat to the surroundings.
Recall that in an endothermic reaction, the system gains energy, which means the surroundings lose energy, causing a temperature drop around the reaction site.
Recognize that neutralization reactions and combustion reactions are specific types of reactions that are generally exothermic, meaning they release heat.
Identify that the question asks for the type of reaction where heat is absorbed, which matches the definition of an endothermic reaction.
Conclude that the correct answer is an endothermic reaction because it involves the absorption of heat from the surroundings.
2:30mWatch next
Master Endothermic & Exothermic Reactions with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Endothermic & Exothermic Reactions practice set
Problem sets built by lead tutorsExpert video explanations