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Statement-1 : Chemical equation H^(+)(aq...

Statement-1 : Chemical equation `H^(+)(aq) + OH^(-)(aq) rarr H_(2)O(I), Delta H = -X` kJ represents the enthalpy of formation of water
And
Statement-2 : `Delta H_("neutralisation")` of strong acid and strong base is constant.

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1

B

Statement-1 is True, Statement-2 is True, Statement-2 is Not a correct explanation for Statement-1

C

Statement-1 is True, Statement-2 is False

D

Statement-1 is False, Statement-2 is True

Text Solution

AI Generated Solution

The correct Answer is:
To solve the given question, we need to analyze both statements provided and determine their validity. ### Step 1: Analyze Statement 1 **Statement 1:** The chemical equation \( H^+(aq) + OH^-(aq) \rightarrow H_2O(l), \Delta H = -X \) represents the enthalpy of formation of water. - The enthalpy of formation is defined as the change in enthalpy when one mole of a compound is formed from its pure elements in their standard states. - In the equation, \( H^+ \) and \( OH^- \) are ions, not the pure elements. Pure elements for water would be diatomic hydrogen (\( H_2 \)) and diatomic oxygen (\( O_2 \)). - Therefore, this reaction does not represent the enthalpy of formation of water, but rather the enthalpy change associated with the neutralization reaction. **Conclusion for Statement 1:** **False**. ### Step 2: Analyze Statement 2 **Statement 2:** The \( \Delta H \) of neutralization of a strong acid and strong base is constant. - The enthalpy of neutralization for strong acids and strong bases is indeed generally constant. For example, the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) releases approximately \( -57.1 \, kJ/mol \). - This value is consistent for all strong acid-strong base reactions because they completely dissociate in solution. **Conclusion for Statement 2:** **True**. ### Final Conclusion - **Statement 1:** False - **Statement 2:** True Thus, the correct option is that Statement 1 is false and Statement 2 is true. ### Answer: Option D - Statement 1 is false and Statement 2 is true. ---
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