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A(m)^(@) value cannot be determined grap...

`A_(m)^(@)` value cannot be determined graphically , the plot between `A_(m)` verses `C^(1//2)` for which of the following compound.

A

`KCl`

B

`K_(2)SO_(4)`

C

`NH_(4)OH`

D

`NaNO_(3)`

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To solve the question regarding the molar conductivity at infinite dilution (A_m^(@)) and its graphical determination, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Concept of Molar Conductivity**: - Molar conductivity (A_m) is a measure of how well an electrolyte conducts electricity in solution. It is defined as the conductivity of the solution divided by the molar concentration of the electrolyte. 2. **Identify Strong vs. Weak Electrolytes**: - Strong electrolytes completely dissociate into ions in solution, leading to a linear relationship between molar conductivity (A_m) and the square root of concentration (C^(1/2)). - Weak electrolytes do not completely dissociate, resulting in a non-linear relationship between A_m and C^(1/2). 3. **Graphical Determination**: - For strong electrolytes, the plot of A_m versus C^(1/2) will yield a straight line, allowing for the determination of A_m^(@) graphically. - For weak electrolytes, the plot will not be linear, making it impossible to determine A_m^(@) graphically. 4. **Analyze the Given Compounds**: - KCl: Strong electrolyte - K2SO4: Strong electrolyte - NaNO3: Strong electrolyte - NH4OH: Weak electrolyte 5. **Conclusion**: - Since NH4OH (ammonium hydroxide) is a weak electrolyte, the value of molar conductivity at infinite dilution (A_m^(@)) cannot be determined graphically. ### Final Answer: The compound for which the value of molar conductivity at infinite dilution cannot be determined graphically is **NH4OH** (option 3). ---
To solve the question regarding the molar conductivity at infinite dilution (A_m^(@)) and its graphical determination, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Concept of Molar Conductivity**: - Molar conductivity (A_m) is a measure of how well an electrolyte conducts electricity in solution. It is defined as the conductivity of the solution divided by the molar concentration of the electrolyte. 2. **Identify Strong vs. Weak Electrolytes**: ...
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