5. Some undiluted acids are more corrosive when diluted
with water. That is why lab workers are told to wipe off
splashes with a towel before washing. Explain.

Diluted acids are more corrosive then undiluted due to the presence of more H+ ions than the undiluted acids. The More the H+ ions are added the more corrosive the acid is.

When water is mixed with strong acid the hydrogen ions reacts with acid ions and a exothermic reaction takes place that release high amount of energy which boils violently, to avoid any accident it is advised to lab workers to wipe if any splash self before washing.

Thus, the correct answer is : due to the hydrogen ions reacts and release high amount of energy with the strong acid.

5. Some undiluted acids are more corrosive when diluted with water. That is why lab workers are told to wipe off splashes with a towel before washing. Explain.

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5. Some undiluted acids are more corrosive when diluted
with water. That is why lab workers are told to wipe off
splashes with a towel before washing. Explain.