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the cause of the difference in the conductances current of isomolar solutions of kno3 and can(no3)2

the cause of the difference in the conductances current of isomolar solutions of kno3 and can(no3)2

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Answer #1

In KNO3, the number of ions are 2, i.e. K+ and NO3-. In Ca(NO3)2, there are 3 ions, one Ca2+ and two NO3-. So, number of ions are more in Ca(NO3)2.

So, if there are isomolar solutions of both, then there will be more number of ions of Ca(NO3)2 in the solution than KNO3. The ionic conductivities are additive for the ions in a salt.

For KNO3, addition of conductivity of K+ and conductivity of NO3-.

KNO3 = K+ + NO3-

Similarly, for Ca(NO3)2,

Ca(NO3)2 = Ca2+ + 2NO3-

This explains the difference in their conductances current.

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