Chemistry JAMB, WAEC, NECO AND NABTEB Official Past Questions

N₂O_4(aq) \(\rightleftharpoons\) 2NO_2(g) \(\bigtriangleup\)H = +ve

In the reaction above, an increase in temperature will

CH_4(g) + CI_2(g) \(\to\) CH₂CI_(s) + HCI_g

The major factor that influences the rate of the reaction above is

From the diagram above, an ideal gas can be represented by

The curve depicts titration between a strong acid of pH

The diagram represents

In the diagram above, X is the

The functional groups present in the compound above are

n monosaccharide \( \underset{Q}{\stackrel{P}{\rightleftharpoons}} \) polysaccharide –n water.

In the process above, P and Q respectively represent

The compound above exhibits

MnO\(_4\)(aq) + Y + 5Fe\(^{2+}\) (aq) \(\mapsto\) Mn\(^{2+}\) (aq) + 5Fe\(^{3+}\) (aq) + 4H\(_2\)O (l).

In the equation above, Y is

A chemical reaction in which the hydration energy is greater than the lattice energy is referred to as

The gas that is used for the treatment of cancer is

Calculate the volume in cm³ of oxygen evolved at s.t.p when a current of 5A is passed through acidified water for 193s?
[F = 96500 C mol¹. Molar volume of a gas at s.t.p = 22.4dm³]

An isotope has an atomic number of 15 and a mass number of 31. The number of proton it contains is

An example of a solid emulsion is

In a neutralization reaction involving HCI and NaOH using litmus as indicator, the colour at the end point is

In the extraction of iron, the waste gas from the furnace is a mixture of

The arrangement of particles in crystal lattices can be studied using

The drying agent suitable for drying ammonia is

The number of electronic shells contained in an atom with electron configuration 1s²2s²2p⁶3s²3p⁶4s² is

Ethanol is soluble in water due to the presence of a