A student accidentally spills a small amount of concentrated sodium hydroxide solution on the laboratory bench. What is the most appropriate immediate action?
Show the answer and explanation
Correct answer
C. Rinse the spill with plenty of water and then wipe it up.
Principle or equation
For spills of corrosive solutions, the first step is to dilute and rinse with water, then clean up safely.
Why this answer is correct
Concentrated sodium hydroxide is corrosive. Rinsing with plenty of water dilutes it and reduces its hazard. Wiping with a dry towel spreads it and may damage surfaces. Neutralizing with acid can generate heat and is not the first step. Sand is for absorbing, but water rinse is more appropriate for a liquid spill on a bench.
Example
If concentrated HCl is spilled, rinse with water and then neutralize with sodium bicarbonate if needed.
This published item includes a stored explanation and passed the platform’s publication workflow. It is independent preparation material, not a claim of an official or recalled examination question.