1994 - JAMB Chemistry Past Questions and Answers - page 4

2HCL_(ag) + CaCO_3(ag) → CaCL_2(ag) + H₂O₍₁₎ + CO from the reaction above, which of the following curves represents the consumption of calcium trioxocarbonate (IV) as dilute HCL is added to it?

In the diagram above, R is a mixture of

The IUPAC name of the compound above is

Use the diagram above to answer this question. The reaction taking place in flask G is known as

MnO_4(aq) + 8H + 5Fe²⁺ \(\to\) Mn²⁺_(aq) + 5Fe³⁺_(aq) + H₂O. The oxidation number of maganese in the above reaction changed from

which of these metals CANNOT replace hydrogen from alkaline solutions?

Clothes should be properly rinsed with water after bleaching because

A mixture of sand, ammonium chloride and sodium chloride is best separated by?

A pure solid usually melts?

At the same temperature and pressure, 50 cm³ of nitrogen gas contains the same number of molecules as?