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Question 7

A block of ice at $$-10°C$$ is slowly heated and converted to steam at $$100°C$$. Which of the following curves represent the phenomenon qualitatively:

Solution

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For ice at −10°C heated to steam at 100°C, the qualitative heating curve should have:

  1. Rising temperature from −10°C to 0°C (ice warming)
  2. Horizontal plateau at 0°C (melting, temperature constant)
  3. Rising temperature from 0°C to 100°C (water warming)
  4. Horizontal plateau at 100°C (boiling, temperature constant)

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