The amount of electrolytes required to coagulate a given amount of Agl colloidal solution (–ve charge) will be in the order
NaNO3 > Al2(NO3)3 > Ba(NO3)2
Al2(NO3)3 > Ba(NO3)2 > NaNO3
Al2(NO3)3 > NaNO3 > Ba(NO3)2
NaNO3 > Ba(NO3)2 > Al2(NO3)3
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