Which of these statements about the reactivity series is correct?
Metals at the bottom of the reactivity series lose electrons more easily than metals at the top of the series
Metals at the top of the reactivity series react less vigorously than metals at the bottom of the series
Metals at the top of the reactivity series lose electrons more easily than metals at the bottom of the series
What happens at the anode during electrolysis?
Negative ions gain electrons
Positive ions gain electrons
Negative ions lose electrons
In the electrolysis of molten lead bromide, what is the product at the anode?
Lead
Bromine
Oxygen
In the electrolysis of copper nitrate solution, what is the product at the cathode?
Hydrogen
Copper
In the electrolysis of a solution, which ions from water are attracted to the anode?
Hydroxide, OH-
Oxide, O2-
Hydrogen, H+
In the electrolysis of sodium chloride solution, what is the product at the cathode?
Sodium
Chlorine
Which of these equations represents a displacement reaction?
Copper + oxygen → copper oxide
Zinc + copper sulfate → zinc sulfate + copper
Sodium + water → sodium hydroxide + water
What is reduction? - HIGHER
Adding oxygen
Losing electrons
Gaining electrons
Which half equation represents the reaction at the cathode in the electrolysis of molten copper chloride? - HIGHER
2Cl- → Cl2 + 2e-
Cu2+ + 2e- → Cu
2H+ + 2e- → H2
Which half equation represents a reaction at the anode in the electrolysis of aqueous sodium nitrate? - HIGHER
Na+ + e- → Na
4OH- → 2H2O + O2 + 4e-