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NEETChemistryThermodynamics (C)

In a thermochemical equation, what does the standard state refer to?

Options

  1. AThe state of matter when a substance is in its liquid phase.
  2. BThe state of matter when a substance is in its gaseous phase.
  3. CThe pure form of a substance at 0°C.
  4. DThe most stable state of a substance at a specified temperature and pressure.

Correct answer

D. The most stable state of a substance at a specified temperature and pressure.

Step-by-step solution

The standard state in a thermochemical equation refers to the most stable state of a substance under specific conditions of temperature and pressure.

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