WAEC - Chemistry (2001 - No. 33)
If 10 cm 3 of distilled water is added to 10 cm3 of an aqueous salt solution, the concentration of the solution
increases
decreases
remains constant
doubles
Vysvětlení
The concentration of a solution is the amount of a constituent divided by the total volume of the mixture. When water is added to a solution, the total volume increases, but the number of moles of solute remains the same. This results in a decrease in concentration.