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Assertion : Heat of neutralization for b...

Assertion : Heat of neutralization for both `H_(2)SO_(4) and HCl` with NaOH is `53.7 kJ mol^(−1)`.
Reason : Both `HCl and H_(2)SO_(4)` are strong acids.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that the heat of neutralization for both H₂SO₄ (sulfuric acid) and HCl (hydrochloric acid) with NaOH (sodium hydroxide) is 53.7 kJ/mol. - The heat of neutralization is the amount of heat released when an acid reacts with a base to form water and a salt. 2. **Understanding the Reason**: - The reason states that both HCl and H₂SO₄ are strong acids. - Strong acids completely dissociate in water to produce H⁺ ions, which is essential for the neutralization reaction. 3. **Analyzing the Heat of Neutralization**: - The standard heat of neutralization for a strong acid reacting with a strong base is approximately 57.1 kJ/mol. However, for strong acids like HCl and H₂SO₄, the value is often cited as 53.7 kJ/mol due to the additional energy changes involved when polyprotic acids (like H₂SO₄) are considered. 4. **Conclusion on the Assertion**: - Since both HCl and H₂SO₄ are strong acids, the assertion that the heat of neutralization is 53.7 kJ/mol is generally accepted as true. 5. **Conclusion on the Reason**: - The reason is also true because both acids are indeed strong acids, which leads to the heat of neutralization being at that standard value. 6. **Final Evaluation**: - Since both the assertion and reason are true, and the reason correctly explains the assertion, we conclude that both the assertion and reason are true, and the reason is the correct explanation for the assertion. ### Final Answer: Both the assertion and reason are true, and the reason is the correct explanation for the assertion. ---
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