Question

What is the formula for sodium sulfate?

Answer 1

`Na_2SO_4`

Explanation:

The sulfate ion, `SO_4^(2-)` is a very common ion counter ion, and has some aqueous solubility. In sulfate, the formal oxidation state of the sulfur is `VI^+`, and the negative charges are assumed to be distributed to the oxygen centres. Bisulfates, `HSO_4^-`, are also very common.