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Question
Which of the following plot correctly represents the variation of concentration of a surfactant (e.g. sodium doedecyl sulphate) versus molar conductivity with regard to behavior at CMC?
Which of the following plot correctly represents the variation of concentration of a surfactant (e.g. sodium doedecyl sulphate) versus molar conductivity with regard to behavior at CMC?
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Solution
The correct option is A a
The molar conductivity varies as shown in plot a). With increase in concentration below CMC, molar conductivity keeps on decreasing. After CMC, the decrease becomes steeper and a discontinuity is observed at CMC.
The molar conductivity varies as shown in plot a). With increase in concentration below CMC, molar conductivity keeps on decreasing. After CMC, the decrease becomes steeper and a discontinuity is observed at CMC.
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