Electrolysis 3 - Aqueous Solutions
This lesson covers:
- How aqueous electrolysis works
- How it can be used to separate soluble compounds
In the electrolysis of a solution, which two ions are present from the water molecules themselves?
H+
OH-
H2O-
H-
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In the electrolysis of aqueous solutions, what is the rule for determining which ion will be oxidised (lose electrons) at the anode (positive electrode)?
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In the electrolysis of aqueous solutions, what is the rule for determining which ion will be reduced (gain electrons) at the cathode (negative electrode)?
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In the electrolysis of aqueous sodium chloride, NaCl (aq), which four ions would be present in the electrolyte?
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In the electrolysis of aqueous sodium chloride, NaCl (aq), which of the four ions will be oxidised at the anode (positive electrode)?
Chloride ions (Cl-)
Hydroxide ions (OH-)
Sodium ions (Na+)
Hydrogen ions (H+)
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In the electrolysis of aqueous sodium chloride, NaCl (aq), which of the four ions will be reduced at the cathode (negative electrode)?
Sodium ions (Na+)
Chloride ions (Cl-)
Hydrogen ions (H+)
Hydroxide ions (OH-)
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In the electrolysis of aqueous copper nitrate, Cu(NO3)2 (aq), which four ions would be present in the electrolyte?
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In the electrolysis of aqueous copper nitrate, Cu(NO3)2 (aq), which of the four ions will be oxidised at the anode (positive electrode)?
Hydroxide ions (OH-)
Nitrate ions (NO3-)
Copper ions (Cu2+)
Hydrogen ions (H+)
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In the electrolysis of aqueous copper nitrate, Cu(NO3)2 (aq), which of the four ions will be reduced at the cathode (negative electrode)?
Nitrate ions (NO3-)
Hydrogen ions (H+)
Hydroxide ions (OH-)
Copper ions (Cu2+)
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