Which of the following statements about acids are correct (i) All compounds containing hydrogen are acidic. (ii) Acids generate H+ ions in aqueous solution. (iii) Aqueous solution of acids change the colour of turmeric into red. (iv) Aqueous solution of acids conduct electricity.?

(ii), (iii) and (iv)
(ii) and (iv)
(ii) and (iii)
(i), (ii) and (iv)

LohaHridoy

5 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 2 : (ii) and (iv)

The correct answer is statements (ii) and (iv).

Concept:

Acids:

The substances that dissociate in an aqueous solution to release H⁺ ions are acids.
They are sour in taste.
Their pH range varies from 1 (extremely acidic) to 7 (neutral).

Explanation:

Properties of acids:

In an aqueous solution, acids dissociate to release H+ ions.

Aqueous solutions of acids are electrolytes i.e., they conduct electricity.
Acids change the color of certain acid-base indicates.
- Two common indicators are litmus and phenolphthalein. Blue litmus turns red in the presence of an acid, while phenolphthalein turns colorless.
- Turmeric remains yellow in acidic solution and turns red in basic solution.
Acids react with active metals to yield hydrogen gas.

Acids react with bases to produce a salt compound and water.

All compounds containing hydrogen are acidic.	False, only substances that dissociate in water to release H+ ions are acidic.
Acids generate H+ ions in an aqueous solution.	True
The aqueous solution of acids changes the color of turmeric into the red.	False, the color of turmeric remains yellow.
The aqueous solution of acids conducts electricity.	True

5 views Answered 2022-09-04 04:29

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