NCERT Solutions for Class 7 Science Chapter 5
Important NCERT Questions
7th Chapter 5 Acids, Bases and Salts
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 8 part: a
Explain why: An antacid tablet is taken when you suffer from acidity.
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An antacid tablet is taken to address symptoms linked to acidity or acid reflux. Here’s why it’s used:
1. Neutralizing Stomach Acid: Acidity arises due to an overproduction of stomach acid, leading to discomfort like heartburn or indigestion. Antacid tablets contain compounds like calcium carbonate, magnesium hydroxide, or aluminum hydroxide, acting as bases. These compounds react with excess stomach acid (an acidic substance), neutralizing it and reducing its corrosive impact, thereby easing discomfort.
2. Symptom Relief: By neutralizing stomach acid, antacids alleviate symptoms such as heartburn, indigestion, and upper abdominal discomfort. This neutralization process minimizes the acidity, providing temporary relief from the burning sensation caused by excessive acid irritating the esophagus lining.
3. Quick Action: Antacid tablets typically offer rapid relief due to their ability to swiftly neutralize the acidic environment in the stomach. This prompt action provides quick comfort to individuals experiencing acidity-related symptoms.
4. Buffering Effect: Antacids serve as buffers, helping regulate stomach pH. They aid in preventing the stomach’s pH from becoming excessively acidic or basic, maintaining a more comfortable pH balance.
In essence, antacid tablets work by neutralizing surplus stomach acid, swiftly easing symptoms related to acidity, and acting as a buffer to maintain a more balanced stomach pH.
Due to release of excess of hydrochloric acid, we suffer from acidity. An antacid tablet consists of a base like Milk of Magnesia (magnesium hydroxide). It neutralizes the effect of excessive acid and brings relief.
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