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Question

Calculate the molar conductivity of HNO2 at infinite dilution (in Scm2 mol1 ).

Given that λH+=349.6 Scm2mol1 and λNO2=71.7 Scm2mol1.


A
421.3
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B
321.3
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C
421.3×104
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D
321.3×104
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Solution

The correct option is B 421.3
The molar conductivity of HNO2 at infinite dilution (in Scm2mol1 ) is:

ΛoHNO2=λ0H++λ0NO2=349.6+71.7=421.3.

It is equal to the sum of the molar conductivity of hydrogen ions and the molar conductivity of nitrite ions at infinite dilution.

Option A is correct.

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