match each ionic compound with the correct description of its solubility in water. nano3 nano3 drop zone empty. pbso4 pbso4 drop zone empty. ag2co3 ag2co3 drop zone empty. k3po4 k3po4 drop zone empty. soluble; both ions always give soluble salts soluble; an exception to the usual behavior of the anion insoluble; not an exception to the usual behavior for the anion insoluble; an exception to the usual rule