(a) What do you think is the pH in the stomach of a person suffering from indigestion? Is it less than 7 or more than 7?

(b) What do you think is the pH of an antacid solution? Is it less than 7 or more than 7?

(c) How does an antacid work?

(d) Name two common antacids.

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Solution

(a) less than 7.
(b) more than 7.
(c) Antacids react with excess acid in the stomach and neutralise it.

(d) Milk of magnesia and baking soda

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