How bad would the ingestion of 10ml^3 of NaOH be, if there is just enough water for the NaOH to dissolve? (Also, what about 25ml^3)? I have seen acid burns on a hand of a person almost two days after contact, but if it was ingested in aqueous solution, how bad would the 10ml^3 be? Would this cause corrosion of the Esophagus? How bad would this be? if left for a couple of hours? I'm asking incase of accidental ingestion (due to the solution being colourless, although I know of course to label any container with the solution that it includes), however accidents do happen. Thank you.