1. a) What is the effect of the concentration of an electrolyte on the conductan

Question

1. a) What is the effect of the concentration of an electrolyte on the conductance ( current)?
b). What is the cause of the differences in the conductances ( currents) of isomolar solutions of KNO3 and Ca(NO3)2 ?
c). Explain the presence of ionic impurities in ordinary tap water and the presence of molecular impurities in ordinary tap water.

1. a) What is the effect of the concentration of an electrolyte on the conductance ( current)?
b). What is the cause of the differences in the conductances ( currents) of isomolar solutions of KNO3 and Ca(NO3)2 ?
c). Explain the presence of ionic impurities in ordinary tap water and the presence of molecular impurities in ordinary tap water.


b). What is the cause of the differences in the conductances ( currents) of isomolar solutions of KNO3 and Ca(NO3)2 ?
c). Explain the presence of ionic impurities in ordinary tap water and the presence of molecular impurities in ordinary tap water.

Explanation / Answer

1a)

if the concnetration of an electrolyte increases, then there are more ions in solutoin, therefore electorns flow easier, that is, current is higher

1b)

KNO3 = K+ and NO3-; there are only 2 ions compared with

Ca(NO3) = Ca+2 and 2NO3-; which have 3 ions, therefore more conductivity

1c)

ionic impurities ar eessentially dissolved solids from other salts

in tap water, it is pretty common to havE: Na+, K+; Cl-; Br-; Mg+2, CO3-2; Ca+2

molecular impurities --> all those organic relate substances such as methane, O2 dissolved, N2, chloroform, etc

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