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In a chemical reaction, if the enthalpy change (ΔH) is negative, what does this

Practice Questions

Q1
In a chemical reaction, if the enthalpy change (ΔH) is negative, what does this indicate?
  1. The reaction is endothermic
  2. The reaction is exothermic
  3. The reaction is at equilibrium
  4. The reaction requires energy input

Questions & Step-by-Step Solutions

In a chemical reaction, if the enthalpy change (ΔH) is negative, what does this indicate?
  • Step 1: Understand what enthalpy change (ΔH) means. It is a measure of heat energy change during a chemical reaction.
  • Step 2: Recognize that a negative ΔH value indicates that heat is being released.
  • Step 3: Know that when heat is released to the surroundings, the reaction is classified as exothermic.
  • Step 4: Conclude that a negative ΔH means the reaction gives off heat.
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