Which item is used for evaporating a solution?

Which item is used for evaporating a solution?

• A. Evaporating basin
• B. Beaker
• C. Erlenmeyer flask
• D. Watch glass

Answer: (A)

Evaporation works best when you spread the liquid into as much surface area as possible so heat can drive the solvent away quickly. The evaporating basin is a shallow, wide dish that provides a large surface for the liquid to evaporate, making it ideal for concentrating solutions.

A beaker, while capable of heating, has a larger volume and curved sides, which limits surface exposure and can lead to slower evaporation and splashing. An Erlenmeyer flask has a narrow neck, which reduces the exposed surface area and isn’t optimized for rapid evaporation. A watch glass is very small and thin, so its surface area is much smaller; it’s typically used for small amounts or to cover a beaker, not for efficiently evaporating a solution.

So the evaporating basin best fits the goal of evaporating a solution due to its large, exposed surface area and heat tolerance.