A block of ice at -10ºC is slowly heated and converted to steam at 100ºC. Which of the following curves represents the phenomenon qualitatively:
Text Solution
Verified by ExpertsA
The temperature of ice will first increase from – 10°C to 0°C. Heat supplied in this process
will be:
Q 1 = mS i (10), m = mass of ice
S i = specific heat of ice
Then ice starts melting. Temperature during melting will remain constant (0ºC)
Heat supplied in the process will be
Q 2 = mL, L = Latent heat of melting
Now the temperature of water will increase from 0°C to 100°C. Heat supplied will be:
Q 3 = mS w (100)
S w = Specific heat of water
Finally water at 100°C will be converted into steam t 100°C and during this process temperature again
remains constant. Temperature versus heat supplied graph will be as follows:
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