During a chemical reaction, gas evolves and the container feels warm without external heating. What is the most appropriate conclusion?
Answer and explanation
Correct answer: A gaseous product has formed and the reaction is exothermic.
Evolution of gas indicates that a gaseous product is being formed. If the container becomes warm without external heating, heat is being released by the reaction; therefore, the reaction is exothermic. In contrast, an endothermic reaction absorbs heat from its surroundings and would not normally make the container warm.
Frequently asked questions
What is the correct answer to this question?
A gaseous product has formed and the reaction is exothermic.
Why is this the correct answer?
Evolution of gas indicates that a gaseous product is being formed. If the container becomes warm without external heating, heat is being released by the reaction; therefore, the reaction is exothermic. In contrast, an endothermic reaction absorbs heat from its surroundings and would not normally make the container warm.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
