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InterviewSolution
| 1. |
Discuss the change inenergy and arrangement of moleculs on increasing of ice from -5^(@)C to10^(@) C at 1 atm pressure. |
| Answer» Solution :When ice is heated at `-5^(@)`C, its TEMPERATURE increases upto `0^(@)` C, i.e the kinetic energy of the MOLECULES increases. At `0^(@)C`, the ice starts melting. During this process the energy supplied is utilised to increase the potential energy of the molecules keeping kinetic energy CONSTANT, and the arrangement of molecules changes, Once the process ENDS, the heat supplied is again used to increase the temperature of water by increasing the kineticenergy. However, from `0^(@)C` to `4^(@)C` , the molecules of water come closer and above `4^(@)C`, the molecules move further away. | |