JAMB - Chemistry (1978 - No. 29)
Which of the following compounds will form a solution if exposed to air?
Na2CO3.10H2O
NaNO3
CuSO4
CaCl2
Na2SO4.10H2O
Εξήγηση
Calcium chloride is a deliquescent substance. It attracts water from the atmosphere and then forms a solution.