Hydrochloric acid ($\ce{HCl}$) is found in the stomach, so why it doesn't damage the stomach despite that it is considered to be one of the most dangerous acids?


closed as off-topic by orthocresol Nov 10 '17 at 21:47

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    $\begingroup$ Short answer: the stomach has a lining and is constantly renewing it. $\endgroup$ – TAR86 Nov 10 '17 at 17:23
  • $\begingroup$ Of course it does. How do you think stomach ulcer and gastritis come about? (Sure, there are other reasons and counter-reasons.) $\endgroup$ – Ivan Neretin Nov 10 '17 at 17:30
  • $\begingroup$ This question already has an answer here on Bio.SE: biology.stackexchange.com/questions/6820/… $\endgroup$ – AbhigyanC Nov 10 '17 at 18:36
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    $\begingroup$ I'm closing this question as off-topic because it is not fundamentally about chemistry. $\endgroup$ – orthocresol Nov 10 '17 at 21:47
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    $\begingroup$ I am voting to reopen this question, because it does address chemistry, even though it is chemistry in living species. $\endgroup$ – Jan Nov 11 '17 at 4:09