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In endothermic reactions,...

In endothermic reactions,

A

reactants have more energy than products

B

reactants have less energy than products

C

reactants and products have same energy

D

reactants have lower temperature than products.

Text Solution

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The correct Answer is:
To solve the question regarding endothermic reactions, we need to understand the characteristics of such reactions and analyze the given options based on the information provided in the video transcript. ### Step-by-Step Solution: 1. **Understanding Endothermic Reactions**: - In an endothermic reaction, the system absorbs heat from the surroundings. This means that the enthalpy change (ΔH) for the reaction is positive. 2. **Analyzing the Graph**: - The graph mentioned in the question shows that the heat of the reactants (R) is less than the heat of the products (P). This indicates that heat is absorbed during the reaction, which is characteristic of endothermic reactions. 3. **Evaluating the Options**: - **Option 1**: "ΔH is equal to net heat absorbed from the surroundings." - This is true for endothermic reactions since they absorb heat. - **Option 2**: "ΔH is positive for the reaction." - This is also true as endothermic reactions have a positive ΔH. - **Option 3**: "Total energy possessed by the reaction is negative." - This is incorrect; the total energy change is positive in endothermic reactions. - **Option 4**: "Net heat given to the reaction." - This is misleading; while heat is absorbed, it is not "given" to the reaction in the same sense as in exothermic reactions. 4. **Conclusion**: - The correct options regarding endothermic reactions are Option 1 and Option 2, as they accurately describe the nature of heat absorption and the positive enthalpy change. ### Final Answer: The correct options for endothermic reactions are: - ΔH is equal to net heat absorbed from the surroundings. - ΔH is positive for the reaction.
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