2014
If the change in free energy of a system is -899 Jmol-1 and the entropy change is 10Jmol-1k-1 at 250C, calculate the enthalpy change.
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2014 JAMB UTME Chemistry Past Questions
2014
How many faraday of electricity is required to produce 0.25 mole of copper?
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2014
Calculate the quantity of electricity in coulombs required to liberate 10g of copper from a copper compound[Cu=64, F = 96500 Cmol-1]
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2014
H 2O (g) + C (s) → H2(g) + CO(g)The oxidizing agent in the reaction above is
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2014
Zn (s) + CuSO 4(aq) → ZnSO 4(aq) + Cu (s)In the reaction above, the oxidation number of the reducing agent changes from
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2014
The gas that is removed by the water in the flask is
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2014
Which of the following will shift to the left from dilute tetraoxosulphate (VI) acid?
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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?
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2014
In a chemical reaction, the change in concentration of a reactant with time is
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2014
In an equilibrium reaction, which of the following conditions indicates that maximum yield of the product will be obtained?
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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
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2014
A compound that gives a brick-red colour to a non-luminous flame is likely to contain
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2014
In the electrolytic extraction of cacium from calcium chloride, the cathode is
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2014
In the extraction of sodium from fused sodium chloride, the anode is made of platinum because
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2014
Fluorine does not occur in the free state in nature because
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2014
The process of converting starch to ethanol is
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2014
Due to the unstable nature of ethyne, it is stored by dissolving in
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2014
Ethyne is passed through a hot tube containing organo-nickel catalyst to produce
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2014
The alkanol obtained from the production of soap is
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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
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