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STATEMENT-1: The voltage of mercury cell...

STATEMENT-1: The voltage of mercury cell remains constant for longer period of time.
STATEMENT-2: It is because net cell reaction does not involve ions.

A

If both the statements are TRUE and STATEMENTS-1 is the correct explantion of STATEMENTS-2

B

If both the statements are TRUE but STATEMENTS-1 is NOT the correct explanation of STATEMENTS-2

C

If STATEMENTS-1 is TRUE and STATEMENTS-2 is FALSE

D

If STATEMENT-1 is FALSE and STATEMENT-2 is TRUE

Text Solution

AI Generated Solution

The correct Answer is:
To solve the given question, we need to analyze both statements and determine their validity and the relationship between them. ### Step-by-Step Solution: 1. **Understanding Statement 1**: - The statement claims that "the voltage of the mercury cell remains constant for a longer period of time." - This is true because mercury cells are designed to maintain a stable voltage output over time due to their chemical composition and reactions. 2. **Understanding Statement 2**: - The statement claims that "it is because the net cell reaction does not involve ions." - In a mercury cell, the anode reaction involves zinc, and the cathode reaction involves mercuric oxide. The overall reaction can be summarized as: \[ \text{Zn (s) + HgO (s) → ZnO (s) + Hg (l)} \] - Here, both zinc and mercuric oxide are in solid form, and the products (zinc oxide and mercury) are also solids. This means that the net reaction does not involve any ions in solution. 3. **Analyzing the Cell Reaction**: - The absence of ions in the net cell reaction implies that the concentrations of reactants and products do not change significantly over time. - According to the Nernst equation, if the concentrations of the solid reactants and products remain constant, the cell potential (voltage) will also remain constant. 4. **Conclusion**: - Since both statements are true, and Statement 2 correctly explains why Statement 1 is true, we can conclude that: - **Both statements are true**. - **Statement 2 is the correct explanation for Statement 1**. ### Final Answer: Both statements are true, and Statement 2 is the correct explanation for Statement 1.
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