Question
What is the approximate critical temperature of water in degrees Celsius?
The correct answer is
374
Water’s critical temperature is 647.096 K, equivalent to 373.946°C, or approximately 374°C. At the critical point, saturated liquid and saturated vapour become indistinguishable.
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Important Questions from Phase Change of a Pure Substance
- Which of the following exists in a P-V diagram for water?
What the region (2) in the p-V diagram given below is called?
The saturation temperature of steam with increase in pressure increases _________.
A rigid tank contains 10 kg of water at 90°C. If 8 kg of water is in liquid form and the rest is in vapour form, what will be the volume of the tank?
[Given: At 90°C, saturation pressure is 70 kPa , specific volume at saturated liquid state = 0.001 m3/kg , specific volume at saturated vapour state = 2.36 m3/kg.]
- The triple point on a T-s diagram is _________.
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