Question

Which of the following is correct? On dilution the value of both conductance and molar conductance increases On dilution the value of conductance increases but the value of molar conductance decreases On dilution the value of conductance decreases but the value of molar conductance increases On dilution the value of both conductance and molar conductance decreases​

Answer 1

Answer:

The correct option is : On dilution the value of conductance decreases but the value of molar conductance increases.

Explanation:

1. While a solution's specific conductance drops with dilution, its molar conductance rises.
2. The total number of ions rises when a solution is diluted because the degree of dissociation increases.
3. Molar conductance consequently rises with dilution.
4. However, there are fewer ions in each unit of volume.
5. As a result, specific conductance drops as dilution increases
6. An electrolyte solution's molar conductivity is calculated by dividing its conductivity by its molar concentration.
7. The expression of how easily electrons can pass is called conductance.
8. Here, conductance is considered as specific conductance.

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Answer 2

Option B  is correct.

(b) On dilution the value of conductance increases but the value of molar conductance decreases.

(c) On dilution the value of conductance decreases but the value of molar conductance increases

Explanation:

• The equivalent and molar conductivities both the parameter will tend to accumulate maximum value with increasing dilution.
• Therefore, we can conclude that the effect of dilution depending on conductance will show an increase in equivalent conductivity and molar conductivity.
• The molar conductance of a solution will increases with the dilution rate, Thus its specific conductance will decrease with dilution.
• When the solution is diluted, the total number of ions will increases due to increase in the degree of dissociation.
• Hence, molar conductance increases with dilution. But the number of ions per unit volume decreases.
• Hence, specific conductance decreases with dilution.

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