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Which of the following will have same value of molar conductivity and equivalent conductivity:
- a)0.1 M NaCl solution
- b)0.1 M Na2SO4 solution
- c)0.1 M KCl solution
- d)0.1 M MgCl2 solution
Correct answer is option 'A,C'. Can you explain this answer?
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Which of the following will have same value of molar conductivity and ...
**Explanation:**
To understand why the molar conductivity and equivalent conductivity are the same for option A and C, let's first define what these terms mean.
**Molar Conductivity:** Molar conductivity (Λm) is a measure of the ability of a solution to conduct electricity. It is defined as the conductivity of a solution containing 1 mole of electrolyte dissolved in 1 liter of solution.
**Equivalent Conductivity:** Equivalent conductivity (Λeq) is a measure of the conductivity of an electrolyte solution containing 1 equivalent of electrolyte dissolved in 1 liter of solution. An equivalent is the amount of an electrolyte that provides 1 mole of charge.
Now, let's analyze the given options and determine the molar conductivity and equivalent conductivity for each solution.
a) 0.1 M NaCl solution:
- NaCl dissociates into Na+ and Cl- ions in solution.
- Since NaCl is a strong electrolyte, it completely dissociates into ions.
- The molar conductivity and equivalent conductivity of NaCl solution will be the same because 1 mole of NaCl provides 1 equivalent of charge.
b) 0.1 M Na2SO4 solution:
- Na2SO4 dissociates into 2 Na+ ions and 1 SO4- ion in solution.
- Since Na2SO4 is a strong electrolyte, it completely dissociates into ions.
- The molar conductivity of Na2SO4 solution will be higher than the equivalent conductivity because 1 mole of Na2SO4 provides 2 equivalents of charge.
c) 0.1 M KCl solution:
- KCl dissociates into K+ and Cl- ions in solution.
- Since KCl is a strong electrolyte, it completely dissociates into ions.
- The molar conductivity and equivalent conductivity of KCl solution will be the same because 1 mole of KCl provides 1 equivalent of charge.
d) 0.1 M MgCl2 solution:
- MgCl2 dissociates into 1 Mg2+ ion and 2 Cl- ions in solution.
- Since MgCl2 is a strong electrolyte, it completely dissociates into ions.
- The molar conductivity of MgCl2 solution will be higher than the equivalent conductivity because 1 mole of MgCl2 provides 2 equivalents of charge.
Therefore, the options with the same value of molar conductivity and equivalent conductivity are A (0.1 M NaCl solution) and C (0.1 M KCl solution).
To understand why the molar conductivity and equivalent conductivity are the same for option A and C, let's first define what these terms mean.
**Molar Conductivity:** Molar conductivity (Λm) is a measure of the ability of a solution to conduct electricity. It is defined as the conductivity of a solution containing 1 mole of electrolyte dissolved in 1 liter of solution.
**Equivalent Conductivity:** Equivalent conductivity (Λeq) is a measure of the conductivity of an electrolyte solution containing 1 equivalent of electrolyte dissolved in 1 liter of solution. An equivalent is the amount of an electrolyte that provides 1 mole of charge.
Now, let's analyze the given options and determine the molar conductivity and equivalent conductivity for each solution.
a) 0.1 M NaCl solution:
- NaCl dissociates into Na+ and Cl- ions in solution.
- Since NaCl is a strong electrolyte, it completely dissociates into ions.
- The molar conductivity and equivalent conductivity of NaCl solution will be the same because 1 mole of NaCl provides 1 equivalent of charge.
b) 0.1 M Na2SO4 solution:
- Na2SO4 dissociates into 2 Na+ ions and 1 SO4- ion in solution.
- Since Na2SO4 is a strong electrolyte, it completely dissociates into ions.
- The molar conductivity of Na2SO4 solution will be higher than the equivalent conductivity because 1 mole of Na2SO4 provides 2 equivalents of charge.
c) 0.1 M KCl solution:
- KCl dissociates into K+ and Cl- ions in solution.
- Since KCl is a strong electrolyte, it completely dissociates into ions.
- The molar conductivity and equivalent conductivity of KCl solution will be the same because 1 mole of KCl provides 1 equivalent of charge.
d) 0.1 M MgCl2 solution:
- MgCl2 dissociates into 1 Mg2+ ion and 2 Cl- ions in solution.
- Since MgCl2 is a strong electrolyte, it completely dissociates into ions.
- The molar conductivity of MgCl2 solution will be higher than the equivalent conductivity because 1 mole of MgCl2 provides 2 equivalents of charge.
Therefore, the options with the same value of molar conductivity and equivalent conductivity are A (0.1 M NaCl solution) and C (0.1 M KCl solution).
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Which of the following will have same value of molar conductivity and ...
Molar conductance×M=equi.conductance×N
In both A&C there is univalent ions .so concentration become same in both
In both A&C there is univalent ions .so concentration become same in both
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