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Read the given statements and select the...

Read the given statements and select the correct option.
Statement 1: Reactivity of aluminium decreases when it is dipped in nitric acid.
Statement 2: A protective layer of aluminium nitrate gets formed on the surface of aluminium which stops the further reaction.

A

Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.

B

Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.

C

Statement 1 is true and statement 2 is false.

D

Both statements 1 and 2 are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both statements regarding the behavior of aluminum when it is dipped in nitric acid. ### Step-by-Step Solution: 1. **Understanding Statement 1**: - The first statement claims that the reactivity of aluminum decreases when it is dipped in nitric acid (HNO3). - Aluminum is a reactive metal, but when it comes into contact with nitric acid, a strong oxidizing agent, it does not react as vigorously as it would with other acids like hydrochloric acid. This is because nitric acid forms a protective oxide layer on the surface of aluminum. 2. **Understanding Statement 2**: - The second statement asserts that a protective layer of aluminum nitrate forms on the surface of aluminum, which stops further reactions. - This statement is partially correct. When aluminum reacts with nitric acid, it forms aluminum oxide (Al2O3) rather than aluminum nitrate. This oxide layer acts as a barrier, preventing further reaction between aluminum and nitric acid. 3. **Conclusion**: - Both statements have elements of truth. Statement 1 is correct because the reactivity of aluminum does decrease in the presence of nitric acid due to the formation of a protective layer. Statement 2 is misleading because it refers to aluminum nitrate instead of aluminum oxide. Therefore, while the first statement is correct, the second statement is not entirely accurate. ### Final Answer: - Statement 1 is true. - Statement 2 is misleading but has a kernel of truth regarding the protective layer.
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