Short Answer Questions
1.
Name a natural indicator used for identifying a basic substance. Also mention the colour change.
2.
What are based? What is the difference between a base and an alkali?
3.
What are adds? Mention any two important properties of acids.
What is meant by neutralisation? What are the products of a neutralisation reaction?
What is an antacid? Why is it used?
Answers
Answer:
1) When Phenolphthalein is added to basic solution then it appears pink in color. Natural indicators are the substances used to determine the pH of a substance. For example, turmeric and beet root juice
Bases do not dissolve in water Bases that dissolve in water are alkali
All bases are not alkali All alkali are bases
It neutralizes acids It releases OH- ions, accepts a proton
3)Acids taste sour, conduct electricity when dissolved in water, and react with metals to produce hydrogen gas. Certain indicator compounds, such as litmus, can be used to detect acids. Acids turn blue litmus paper red.
4)Neutralization is the reaction of an acid and a base, which forms water and a salt. Net ionic equations for neutralization reactions may include solid acids, solid bases, solid salts, and water.
5)This medication is used to treat the symptoms of too much stomach acid such as stomach upset, heartburn, and acid indigestion. It is also used to relieve symptoms of extra gas such as belching, bloating, and feelings of pressure/discomfort in the stomach/gut.
Answer:
- 1 turmeric indicator red in acid
Explanation:
- which dissolved and give OH-