Compounds like sodium stearate, called 'surfactants' in general, can form structures known as micelles in water, once the solution concentration reaches the value known as the critical micelle concentration (cmc). Micelles contain dozens to hundreds of molecules. The cmc depends on the substance, the solvent, and the temperature. (a) The turbidity (the amount of light scattering) of solutions increases dramatically at the cmc. Suggest an explanation. .

Video transcript

Hello everyone today. We have the following problem explain why light scattering of solutions increases as the particle size increases. So first you want to make note of some general trends that a true solution has a particle size of less than one nanometer, whereas a call Lloyd Has a particle size between one nm. It was a particle size between one nanometer and 1000 nanometers and so simply put colloids exhibit the tyndall effect, which essentially is just light scattering and so out of these answer choices. That leaves answer choice C as the correct answer, increasing the particle size turn solutions into colloids which exhibit the tyndall effect. Overall, I hope this helps and until next time.