Which of the following substances will have least CMC value? (a) \( \mathrm{C}_{6} \mathrm{H}_{1...

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Which of the following substances will have least CMC value?
(a) \( \mathrm{C}_{6} \mathrm{H}_{13} \mathrm{COOK} \)
(b) \( \mathrm{C}_{9} \mathrm{H}_{19} \mathrm{SO}_{3} \mathrm{Na} \)
(c) \( \mathrm{C}_{11} \mathrm{H}_{23} \mathrm{NH}_{4} \mathrm{Cl} \)
(d) \( \mathrm{C}_{8} \mathrm{H}_{17} \mathrm{COONa} \)
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