A block of ice at -10° C is slowly heated and converted to steam at 100° C. Which of the following curves represents the phenomena qualitatively?

Question

A block of ice at -10° C is slowly heated and converted to steam at 100° C. Which of the following curves represents the phenomena qualitatively? (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

The temperature of ice will first increase from

- 1 0^{\circ} C

to

0^{\circ} C

.
Heat supplied in this process will be

Q_{1} = m s_{i} (10)

where,

m =

mass of ice

s_{i} =

specific heat of ice

Then, ice starts melting. Temperature during melting will remain constant

(0^{\circ} C)

.
Heat supplied in this process will be

Q_{2} = m L, L =

latent heat of melting.
Now the temperature of water will increase from

0^{\circ} C

to

10 0^{\circ} C

. Heat supplied will be

Q_{3} = m s_{w} (100)

where,

s_{w} =

Specific heat of water.
Finally, water at

10 0^{\circ} C

will be converted into steam at

10 0^{\circ} C

and during this process temperature again remains constant. Temperature versus heat supplied graph will be as shown in above figure.

Q. A block of ice at −10∘C is slowly heated and converted to steam at 100∘C. Which of the following curves represents the phenomena qualitatively?

Q. A block of ice at $- 1 0^{\circ} C$ is slowly heated and converted to steam at $10 0^{\circ} C$ . Which of the following curves represents the phenomena qualitatively?