D as the two substances could have close boiling points, so if the temperature is not controlled well, both substances will evaporate.
First of all the ethylamine is base so will be react with water to take the proton from the water (H⁺) , because water is amphoteric will react with bases as acid and acids as a base, so the water in this case will react as an acid and will gives the proton to the base.
In the picture you may see the chemical equation and the structure of the products.
Answer:
the north pole to the south pole
From high temperature to low temperature.