How should you dilute concentrated solutions?

How should you dilute concentrated solutions?

• A. Pour water into concentrated solutions without stirring
• B. Pour concentrated solutions into water or less concentrated solutions while stirring
• C. Add solids to the liquid
• D. Heat before diluting

Answer: (B)

When you dilute a concentrated solution, the main safety goal is to control the heat released and to mix the solution evenly. Adding the concentrated solution to a larger volume of water (or a more dilute solution) while stirring helps spread the heat quickly and prevents a hot, localized spot that could boil or splash. Stirring continuously ensures the heat and solute distribute evenly, reducing the risk of sudden spattering. Pouring water into a concentrated solution can cause a rapid, localized release of heat, leading to splashes or boiling, especially with reactive acids or bases. Adding solids to a liquid doesn’t achieve dilution of a solution, and heating before diluting tends to increase the hazard by elevating the energy in the system. So, the safest and most effective approach is to add the concentrate to water (or a dilute solvent) slowly while stirring.

When you dilute a concentrated solution, the main safety goal is to control the heat released and to mix the solution evenly. Adding the concentrated solution to a larger volume of water (or a more dilute solution) while stirring helps spread the heat quickly and prevents a hot, localized spot that could boil or splash. Stirring continuously ensures the heat and solute distribute evenly, reducing the risk of sudden spattering. Pouring water into a concentrated solution can cause a rapid, localized release of heat, leading to splashes or boiling, especially with reactive acids or bases. Adding solids to a liquid doesn’t achieve dilution of a solution, and heating before diluting tends to increase the hazard by elevating the energy in the system. So, the safest and most effective approach is to add the concentrate to water (or a dilute solvent) slowly while stirring.