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.
loss of electron
loss of hydrogen
loss of oxygen
addition of electronegative elements
Correct answer is C
No explanation has been provided for this answer.
The reaction that occurs all the anode when CuSO4(aq) is electrolyzed using carbon electrode is
2H - (aq) + 2e → H 2(g)
Cu2+ (aq) + 2e → Cu (s)
4OH (aq) -4e → 2H2O(l) + O2 (g)
SO4(aq)2 -2e → SO 2(g) + O2(g)
Correct answer is C
No explanation has been provided for this answer.
Addition of iron catalyst
Increase in the temperature of the system
Increase in the volume occupied by reactants
Increase in the total pressure of the system
Correct answer is D
No explanation has been provided for this answer.
Which of the following factors would affect the equilibrium constant?
Concentration
Temperature
Pressure
Volume
Correct answer is B
Equilibrium constants aren't changed if you change the concentrations of things present in the equilibrium. The only thing that changes an equilibrium constant is a change of temperature.
200 cm3
100 cm3
40 cm3
20 cm3
Correct answer is B
No explanation has been provided for this answer.