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What type of slopes does constant pressure line have in the superheated region of the Mollier diagram?

What type of slopes does constant pressure line have in the superheated region of the Mollier diagram? Correct Answer Positive slope

Explanation:

Mollier diagram is h-s diagram of pure substance.

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  • As the pressure increases, the saturation temperature increases, and so the slope of the isobar also increases. Hence, the constant pressure lines diverge from one another.
  • The critical isobar is a tangent at the critical point.
  • Although the slope of an isobar remains continuous beyond the saturated vapour line, the isotherm bends towards the right and its slope decreases asymptotically to zero, because in the idea gas region it becomes horizontal and the constant enthalpy implies constant temperature.

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