2014
If the change in free energy of a system is -899 Jmol-1 and the entropy change is 10Jmol-1k-1 at 25°C, calculate the enthalpy change.
See more
2014 JAMB UTME Chemistry Past Questions
Ulearngo is an independent study app. It is not affiliated with, endorsed by, or representing Joint Admissions and Matriculation Board (JAMB). Always confirm official exam, admission, registration, syllabus, timetable, and result information from JAMB official website.
2014
How many faraday of electricity is required to produce 0.25 mole of copper?
See more
2014
Calculate the quantity of electricity in coulombs required to liberate 10g of copper from a copper compound[Cu=64, F = 96500 Cmol-1]
See more
2014
H 2O (g) + C (s) → H2(g) + CO(g)The oxidizing agent in the reaction above is
See more
2014
Zn (s) + CuSO 4(aq) → ZnSO 4(aq) + Cu (s)In the reaction above, the oxidation number of the reducing agent changes from
See more
2014
The gas that is removed by the water in the flask is
See more
2014
Which of the following will shift to the left from dilute tetraoxosulphate (VI) acid?
See more
2014
Cr2O\(\frac{2 -}{7}\) (aq) + H2O(1)⇌ 2CrO \(\frac{2 -}{4}\) (aq) + 2H + (aq)What happens to the reaction above when the hydrogen ion concentration is increased?
See more
2014
In a chemical reaction, the change in concentration of a reactant with time is
See more
2014
In an equilibrium reaction, which of the following conditions indicates that maximum yield of the product will be obtained?
See more
2014
A few drops of NaOH solution was added to an unknown salt forming a white precipitate which is insoluble in excess solution. The cation likely present is
See more
2014
A compound that gives a brick-red colour to a non-luminous flame is likely to contain
See more
2014
In the electrolytic extraction of calcium from calcium chloride, the cathode is
See more
2014
In the extraction of sodium from fused sodium chloride, the anode is made of platinum because
See more
2014
Fluorine does not occur in the free state in nature because
See more
2014
The process of converting starch to ethanol is
See more
2014
Due to the unstable nature of ethyne, it is stored by dissolving in
See more
2014
Ethyne is passed through a hot tube containing organo-nickel catalyst to produce
See more
2014
The alkanol obtained from the production of soap is
See more
2014
The process of converting linear alkanes to branched chain and cyclic hydrocarbons by heating in the presence of a catalyst to improve the quality of petrol is referred to as
See more