In many tests for various radicals, a "
<color> precipitate" or "
<color> turbidity" is mentioned. For example, lead acetate with chromate ions gives a yellow precipitate, but hydrogen sulphide with potassium dichromate gives a yellow(or white) "turbidity".
In the reaction itself, the turbidity is noted as a precipitate with a down arrow, but I'm wondering if there is any difference between the two. It looks like turbidity refers to a colloid/suspension being formed, but I'm not sure.
I'd like to know:
- The physical differences/distinguishing features between turbidity and precipitate, if any.
- The observable differences/distinguishing features between the two, if any.