Question

a graph to illustrate the change which take place as the solid ice is converted into water and finally into stream the pressure remain constant.... volume against temperature

Answer 1

When  you heat ice at -15°C to water at 10°C, the following events will take place:



​

From ice at -15°C to ice at 0°C: As you heat the ice, its volume will increase (cubical expansion due to the imparting of thermal energy)

From ice at 0°C to water at 0°C: When you heat ice at 0°C, temperature will not increase while the mass of ice melts to form an equal volume of water (this is due to the latent heat of fusion of ice)

From water at 0°C to water at 4°C: At this stage, on addition of heat, the water will, quite surprisingly, contract, till it reaches maximum density at 4°C.(This negative thermal expansion is termed as the anomalous expansion of water) Many theories have been suggested as the reason of this surprising, yet common phenomenon. Some say it is due to the extra energy required to break the extensive hydrogen bonds that are possessed by water at 0°C. Others attribute it to strong, orientation-dependent intermolecular interactions, similar to that witnessed in molten silica.

From water at 4°C to water at 10°C: In this temperature range, water will show a positive cubical thermal expansion like other substances and gradually expand with the increase in temperature.