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In an endothermic reaction, what is the sign of ΔH?

Practice Questions

Q1
In an endothermic reaction, what is the sign of ΔH?
  1. Positive
  2. Negative
  3. Zero
  4. Undefined

Questions & Step-by-Step Solutions

In an endothermic reaction, what is the sign of ΔH?
  • Step 1: Understand what an endothermic reaction is. It is a type of reaction that absorbs heat from its surroundings.
  • Step 2: Know that when a reaction absorbs heat, it requires energy to proceed.
  • Step 3: Recognize that the change in enthalpy (ΔH) measures the heat content of a system.
  • Step 4: Since heat is absorbed in an endothermic reaction, the change in enthalpy (ΔH) becomes positive.
  • Step 5: Conclude that in an endothermic reaction, ΔH is greater than 0 (ΔH > 0).
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