UNIPORT Chemistry 2020/2021 Past Questions

Cellulose and starch can be classified as one of the following

Which of the following processes leads to increase in entropy?

200cm³ each of 0.1M solution of lead (II) trioxonitrate (V) and hydrochloric acid were mixed. Assuming that lead (II) chloride is completely insoluble, calculate the mass of lead (II) chloride that will be precipitated [Pb = 207, Cl = 35, N = 14, O = 16]

For a reaction in equilibrium, the species involved in the equilibrium constant expression are

Benzene is a polymer of

The oxide XO₂ has a vapour density of 32. what is the atomic number if the resultant mixture is from mass of x?

The boiling of fat and aqueous caustic soda is referred to as

CH₄(g)+ Cl₂(g) —> CH₃Cl(s) + HCl(g) The major factor that influences the rate of the reaction above is

Which of the following will produce a solution with pH less than 7 at equivalent point?

${\table \14; \7}N + X → {\table \17; \8}O + {\table \1; \1}H$
In the reaction above, X is a