Which of the following statements is incorrect with respect to the plot of molar conductivity (Λm) versus square root of concentration (1/√c) for electrolytes in solution?
For strong electrolytes, a straight line with positive slope is obtained.
The graph of **molar conductivity (Λm)** versus the square root of concentration (**1/√c**) shows different behaviors for strong and weak electrolytes:
- For **strong electrolytes**, the plot typically gives a straight line with a **negative slope**, as the molar conductivity decreases with the square root of the concentration. This is because as the concentration decreases, the ions become more dissociated, leading to a decrease in conductivity at low concentrations.
- For **weak electrolytes**, the relationship is not linear, and hence a straight line is not obtained.
- For **strong electrolytes**, the graph is expected to show a straight line with a **negative slope**, and the extrapolated intercept represents the limiting molar conductivity (**Λm0**).
Therefore, the incorrect statement is **Option 3**: **For strong electrolytes, a straight line with positive slope is obtained** (this is not true; the slope is negative).
Important Questions from Electrochemistry
Identify transition metal complexes which are not octahedral in shape.
(A) [Co(NH₃)₆]³⁺
(B) [Ni(CO)₄]
(C) [CoCl(NH₃)₅]²⁺
(D) [CoCl₂(NH₃)₄]⁺
(E) [PtCl₄]²⁻
Choose the correct answer from the options given below:
The product of complete hydrolysis of XeF₆ in the following reaction is:
XeF₆ + H₂O → ? HF
In a reaction A and B react to form product. The initial rate of reaction (ro) was determined using different initial concentrations of A and B as shown below:
A/mol L-1 B/mol L-1 ro/mol L-1 s-1 0.10 0.30 6.81 × 10-4 0.10 0.10 2.27 × 10-4 0.20 0.30 13.62 × 10-4 What is the initial rate of reaction (ro) when the critical concentration of A and B is 0.50 mol/L and 0.50 mol/L, respectively?
In which of the following actinoid elements 6d subshell is vacant?
Which of the following shows both, Frenkel and Schottky defect?
