bob mixed 5 mg of sodium hydroxide pellets in 100 ml of water. describe how the rate of the solution changes…

bob mixed 5 mg of sodium hydroxide pellets in 100 ml of water. describe how the rate of the solution changes when he adds 1 mg more of sodium hydroxide pellets. a as more solute dissolves, the rate of solution decreases. b the rate of solution is unchanged by the concentration. c increasing concentration leads to an increase of rate. d agitate the rock salt and the warm water.

bob mixed 5 mg of sodium hydroxide pellets in 100 ml of water. describe how the rate of the solution changes when he adds 1 mg more of sodium hydroxide pellets. a as more solute dissolves, the rate of solution decreases. b the rate of solution is unchanged by the concentration. c increasing concentration leads to an increase of rate. d agitate the rock salt and the warm water.

Answer

Brief Explanations:

The rate of dissolution is related to the concentration of the solute. As more solute is added and dissolves, the concentration gradient between the solute and the solvent decreases. This reduces the driving - force for dissolution, so the rate of solution decreases.

Answer:

A. As more solute dissolves, the rate of solution decreases.