What happens when an electrolyte, NaCl is added to hydrate ferric oxide solution​

hydrated ferric oxide is ferric hydoxide sol and is positively charged. When aqueous solution of NaCl is added to it,the Cl- ions neutralise the positive charge on the sol particles. In the absence of charge, brown precipitate is formes due to colloids can be coagulation of particles.Nov 11, 2020

Explanation: hope this help

it should be all of them because it asks if you included all of those in your answer

explanation:

it is the most commonly accepted one