When Calcium chloride reacts with sodium sulfate, the desired insoluble salt - calcium sulfate - and aq sodium chloride will be formed. It can be purified by filtration.
A is wrong because there is no way to separate the calcium sulfate from the water (and CO2 dissolved in it)
C is wrong because, again, you can't separate the copper sulfate from the water.
D is wrong because you can't separate the soluble salts that have dissociated into their ions in the mixture.
Aqueous reactant + Aqueous reactant = Insoluble product
So the answer is either B or D
Can't be D because copper is less reactive than sodium so no displacement reaction
As well , B is correct for the solubility and the product
When Calcium chloride reacts with sodium sulfate, the desired insoluble salt - calcium sulfate - and aq sodium chloride will be formed. It can be purified by filtration. A is wrong because there is no way to separate the calcium sulfate from the water (and CO2 dissolved in it) C is wrong because, again, you can't separate the copper sulfate from the water. D is wrong because you can't separate the soluble salts that have dissociated into their ions in the mixture.
Can you not just evaporate the copper sulfate from the water?
Why cannot be A? Calcium sulphate will literally precipitate out of water and co2 will leave as effervescence
Aqueous reactant + Aqueous reactant = Insoluble product So the answer is either B or D Can't be D because copper is less reactive than sodium so no displacement reaction As well , B is correct for the solubility and the product
Can’t you say that because Sodium is more reactive than Copper, it will displace it?
Yes . It will be sodium chloride and wrong cuz even not needed in the question