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Question
(a) What do you think will be the pH in the stomach of a person suffering from indigestion: less than 7 or more than 7?
(b) What do you think will be the pH of an antacid solution: less than 7 or more than 7?
(c) How does an antacid work?
(d) Name two common antacids.
(b) What do you think will be the pH of an antacid solution: less than 7 or more than 7?
(c) How does an antacid work?
(d) Name two common antacids.
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Solution
(a) The pH in the stomach of a person suffering from indigestion would be less than 7, because of excess acid generation in the stomach.
(b) The pH of an antacid solution would be greater than 7. Antacids are anti-acids; that is, they are bases.
(c) Our stomach produces dilute hydrochloric acid, which helps in the digestion of food. Sometimes, excess acid is produced in the stomach, overeating being one of the causes. This results in indigestion along with pain. For relief, antacids, which are weak bases and neutralise the excess acid, are taken.
(d) Two common antacids are magnesium hydroxide (also called milk of magnesia) and sodium hydrogen carbonate (also called baking soda).
(b) The pH of an antacid solution would be greater than 7. Antacids are anti-acids; that is, they are bases.
(c) Our stomach produces dilute hydrochloric acid, which helps in the digestion of food. Sometimes, excess acid is produced in the stomach, overeating being one of the causes. This results in indigestion along with pain. For relief, antacids, which are weak bases and neutralise the excess acid, are taken.
(d) Two common antacids are magnesium hydroxide (also called milk of magnesia) and sodium hydrogen carbonate (also called baking soda).
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