BvU said:The mixing process takes some time during which a temperature reading can give 'anything' between Thot and Tcold. So it's not completely undefined.
Your perspective is apparently from the hot liquid ? Because for the cold liquid the temperature increases and then becomes constant !
If you have ever baked a cake, you will know that mixing is one of the steps. That step is not instantaneous.Elena14 said:I haven't really come across this fact that the mixing process takes time. Will you please elaborate on this one?
When hot liquid is mixed with cold liquid, the temperature of the mixture will decrease as the heat from the hot liquid is transferred to the cold liquid. This is a process known as thermal equilibrium.
The temperature decreases because heat energy always flows from a hotter object to a cooler object in an attempt to reach equilibrium. So, when the hot and cold liquids are mixed, the heat from the hot liquid transfers to the cold liquid, causing a decrease in temperature.
In most cases, it is safe to mix hot and cold liquids. However, it is important to be cautious when dealing with very hot or boiling liquids as they can cause burns or scalding. It is recommended to let the hot liquid cool down for a few minutes before mixing it with a cold liquid.
When hot and cold liquids are mixed, their properties, such as temperature, density, and volume, will change as they reach thermal equilibrium. The resulting mixture will have a different temperature and possibly a different density and volume than the individual liquids.
In general, yes, you can mix any hot and cold liquids together. However, some substances may react differently when mixed, so it is important to be cautious and avoid mixing substances that may cause a chemical reaction or produce harmful fumes.