Question

(a) Mention the pH range within which our body works. Explain how antacids
give relief from acidity. Write the name of one such antacid.
(b) Fresh milk has a pH of 6. How does the pH will change as it turns to curd? Explain your answer.​

Answer 1

Explanation:

(a) Our stomach has pH equal to 2. Antacids neutralizes excess of acid in our body and gives relief from hyperacidity. Sodium hydrogencarbonate is one of such antacid.

(b) pH will decrease as it turns to curd because curd is acidic due to the presence of lactic acid.

Answer 2

(a) Our body works roughly between 7.3 to 7.5 pH range. Acidity means excess of acid level in stomach. Antacid contains basic salt. so when we take antacid it reacts with excess acid of stomach and neutralize.(neutralization reaction takes place between acid and base).Commonly used antacids contains at least one of these key ingredients: Calcium Carbonate, Magnesium Hydroxide, Aluminum Hydroxide and/or Sodium Bicarbonate.

(b) The pH will decrease. The milk when changes to curd become more acidic because of lactic acid Lesser the pH value, more is the acidic nature.

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