In a solution made by dissolving 50 grams of calcium chloride in 1000 grams of water, which component is considered to be the solute?
Calcium chloride is the solute because it was dissolved in water.
Therefore water is the solvent.
Solute is a particle which gets dissolved in a solution. It is usually smaller than solvent in quantity.
Solvent is a particle which dissolves Solute in a solution. It is usually larger than solute in quantity.
In your case above, Calcium chloride is in less quantity, and thus, Calcium chloride shall be called solute.