Why might a small piece of chalk reduce acid indigestion?

Answer 1

Consider the basicity of chalk, i.e. calcium carbonate......

#CaCO_3(s) + 2HCl(aq) rarr CO_2(g) + Ca^(2+) + 2Cl^(-) + H_2O(l)#

If I had an upset stomach, I doubt I would eat a small piece of chalk, but with some commercial products, like the lozenges, you can actually taste the chalkiness in the lozenge, which is not entirely pleasant.

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Answer 2

Olivia Anton

Chalk, mainly calcium carbonate, can neutralize stomach acid, providing relief from acid indigestion.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.