Question

When a pan containing liquid and solid water (ice water) is put over the flame of a stove and stirred vigorously 1. the temperature starts to rise immediately. 2. the temperature rises but only after the ice melts. 3. the temperature rises slowly at first then more and more rapidly?

Answer 1

When a pan containing liquid and solid water (ice water) is put over the flame of a stove and stirred vigorously: 2. the temperature rises but only after the ice melts.
It is known that ice lower the temperature of solution, after ice is melt temperature of liquid start to rise normally. Temperature of ice is 0°C.