Question

14. Molar conductance at infinite dilution of Mg(NO3)2, H2SO4
and HNO3 solution in water are . y and z respectively.
Molar conductance of MgSO4 solution is
(1) x-y + z
(2) x+2y + z
(3) x+y - 2z
(4) X-y + 2z​

Answer 1

Hi, hope this helps!!

Answer 2

Option (3) is the correct answer that is  x+y - 2z

Explanation:

• Molar conductance at infinite dilution of Mg(NO3)2, H2SO4 and HNO3 solution in water are x,y and z respectively.
• Molar conductance of MgSO4 solution is to be determined.
• Molar conductance of MgSO4 solution = Molar conductance at infinite dilution of Mg(NO3)2 + Molar conductance at infinite dilution of H2SO4 -2×Molar conductance at infinite dilution of HNO3 solution.
• Molar conductance of MgSO4 solution =x+y-2z

• Molar conductance is the conductance of all the ions present and furnished by one mole of an electrolyte which is present in a definite volume of the solution.
• It is defined as the conductivity divided by molar concentration.
• Molar conductance is generally denoted by λ (lambda)
• The unit of molar conductance is given by Scm2mol−1 .

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