Is there a substance (I would like to be liquid, but in general any state of aggregation) that maintains its temperature, for example, 0 ° C at room temperature? And is something like this even possible?

Is there a substance (I would like to be liquid, but in general any state of aggregation) that maintains its temperature, for example, 0 ° C at room temperature? And is something like this even possible?

Quick revision of chapter 6 Thermodynamics class 11 chemistry

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answers (3)

Answer 1
August, 2021

Entropy cannot be canceled - any energy is always dissipated, this is a universal law of nature, but there is, oddly enough, a positive answer to your question - there are trillions of trillions of such substances (or rather, their mixtures): freezer - inside -18 ° С, outside + 20 ° С; a working car - outside -30 ° С, inside the engine + 2000 ° С; the human body - inside 36.6 ° С, outside, say, + 20 ° С; in general, any body in an open system (and a physical body is a mixture of chemical substances), capable of performing any energy transformations inside itself: internal, kinetic, gravitational, ELM, etc.). It is these transformations that bring order to the cosmos, opposing entropic chaos. The main rule is that the system should not be closed (but any system is not closed anyway, because closed ones are considered only in theory). In other words, if you don't connect external 220 volts to the iron, or put it on a gas stove, it won't heat up.

Answer 2
August, 2021

This contradicts the law of conservation of energy, since energy was transferred without changing it in the bodies involved. In the presence of a thermocouple, a perpetual motion machine would turn out. It will work out for some time, but not forever. For example ice with water. Until the ice completely melts or all the water freezes, the temperature will hardly change. In the long term, balance will come and the temperatures of the environment and the body will become equal.

Answer 3
August, 2021

As far as I know, no. the temperature of the substance (without extraneous substances by the type of heating and cooling by a stove and refrigerator) will not lag behind one at - 180 and +500

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