Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
Copper is deposited at the cathode
Oxygen is liberated at the anode
it is used for the purification of copper
The solution becomes acidic
Correct answer is C
For purifying impure copper, the anode electrode is impure copper while the cathode electrode is pure copper, but for this question, two different electrodes were used, hence option C is the correct option to this question.
Which of the following statements about the cell notation Mg/Mg2+//Cu2+/Cu is correct?
copper is the anode
Manesium is reduced
Magnesium is the anode
The double line represents the electrodes
Correct answer is B
No explanation has been provided for this answer.
The rate of chemical reaction of solids are not affected by
catalyst
pressure
particle size
temperature
Correct answer is B
No explanation has been provided for this answer.
Addition of catalyst changes the equailibrium position
Decrease in pressure increase in temperature SO3
Decrease in pressure increases the equilibrium concentration of O2
Increase in temperatur favours the forward reaction
Correct answer is C
No explanation has been provided for this answer.
Which of the following factors would not affect the solubility of a gas?
Concentration
Nature of solvent
Pressure
Temperature
Correct answer is A
No explanation has been provided for this answer.