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NEETChemistryThermodynamics (C)

What does a positive enthalpy change (∆ r H) for a reaction indicate?

Options

  1. AThe reaction is exothermic.
  2. BThe reaction is spontaneous.
  3. CThe reaction absorbs heat.
  4. DThe reaction releases heat.

Correct answer

C. The reaction absorbs heat.

Step-by-step solution

A positive enthalpy change (∆ r H) for a reaction indicates that the reaction absorbs heat, making it an endothermic process.

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