Question

Why do you think bournvita or coffee dissolve faster in hot milk then cold milk?

Answer 1

when you add coffee to the milk, coffee molecules starts diffusing into the milk. This diffusion happens due to the Brownian motion of molecules in the milk. In case of cold milk you have to stir it to dissolve the coffee. By stirring you are creating a disturbance in molecules of the cold milk or in other words  you are making the molecules of milk move faster and allowing coffee to get fit into the spaces between milk molecules and get dissolved. In case of hot milk, the milk molecules are already moving faster and hence only little amount of stirring is required to get coffee dissolved.

Answer 2

Answer:

Answer. when you add coffee to the milk, coffee molecules starts diffusing into the milk. This diffusion happens due to the Brownian motion of molecules in the milk. ... In case of hot milk, the milk molecules are already moving faster and hence only little amount of stirring is required to get coffee dissolved.