so here's the question. we have the answers, but i have no idea about the logic behind it, or what the name of the topic it's referring to is:
Copper (II) sulfate and Calcium sulfate are both salts of sulfuric acid.
Copper (II) sulfate, blue solid, very soluble
Calcium sulfate, white solid, only slightly soluble
use the information above to predict what you would observe in each case, if sulfuric acid was added to separate solutions of copper chloride and calcium chloride:
answer: no visible reaction happens with copper chloride and sulfuric acid
white precipitate formed with calcium chloride please can someone tell me how this works, and what sort of topics i should be revising to answer similar questions like this?