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STATEMENT 1 : The molar conductivity of ...

STATEMENT 1 : The molar conductivity of strong electrolyte decreases with increases in concentration and
STATEMENT 2 AT high concentration migration of ion is slow

A

Statement 1 is ture , Statement 2 is true Statement 2 is correct explanation for Statement 1

B

Statement 1 is true Statement 2 is ture Statement 2 is NOT a correct explantion for Statement 1

C

Statement 1 is true statement 2 is ture

D

Statement 1 is false Statement 2 is true

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the given statements, we can break down the concepts of molar conductivity and the behavior of strong electrolytes at different concentrations. ### Step-by-Step Solution: 1. **Understanding Molar Conductivity**: - Molar conductivity (Λm) is defined as the conductivity (κ) of an electrolyte solution divided by its molar concentration (C). - Formula: \( \Lambda_m = \frac{\kappa}{C} \) 2. **Effect of Concentration on Molar Conductivity**: - For strong electrolytes, as the concentration increases, the number of ions per unit volume increases initially, leading to an increase in conductivity. - However, at high concentrations, the ions are closer together, leading to increased interactions (ion-ion interactions) which can hinder their movement. 3. **Observation at High Concentration**: - As concentration increases, the mobility of ions decreases due to these interactions, which results in a decrease in molar conductivity. - Therefore, the first statement is true: "The molar conductivity of strong electrolyte decreases with increases in concentration." 4. **Understanding Ion Migration**: - The second statement mentions that "at high concentration migration of ions is slow." - This is true because, as mentioned earlier, the increased interactions between ions at high concentrations impede their movement, leading to slower migration. 5. **Conclusion**: - Both statements are correct. The first statement is about the behavior of molar conductivity with concentration, and the second statement explains why this behavior occurs (slow migration of ions at high concentration). - Therefore, Statement 2 is indeed a correct explanation of Statement 1. ### Final Answer: Both statements are true, and Statement 2 is the correct explanation for Statement 1. Thus, the answer is **Option A**. ---
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Explain with a graph the variation of molar conductivity of a strong electrolyte with dilution.

Assertion:Molar conductivity increases with decrease in concentration. Reason:Conductivity always decrease with decrease in concentration.

STATEMENT-1: Conductivity decreases with the decrease in concentration of both the weak and strong electolytes. STATEMENT-2: No. of ions per unit volume linearly decreases in both electrolytes.

STATEMENT 1 Using koihlrausch's law of independent migration of ions it is possible to calculate wedge^(@) for anyelectrolyte form the lambda^(@) of individual ions STATEMENT 2 : Limiting molar molar conductivity of na electrolyte can be repersented as the sum of hte individual contribution of the anion and cation of hte electrolyte STATEMENT 3: When concentration appraches zero molar conductivity reaches the lowest limit

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STATEMENT 1 The molar conductance of weak electrolyte at infinite dilutin is equal to sum of molar conductanced of cation and anion and STATEMENT 2 Kohlraushc 's law is applicable for both strong and weak electrolytes

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Knowledge Check

  • Assertion:Molar conductivity increases with decrease in concentration. Reason:Conductivity always decrease with decrease in concentration.

    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 .