WorksheetsC7 - Hydrogen Fuel Cells
Total questions: 10
Worksheet time: 6mins
In the image is an acidic hydrogen fuel cell. Which electrode is the arrow pointing to?
Negative electrode
Positive electrode
In the image is an acidic hydrogen fuel cell. The half reaction occurring at the identified electrode is...
O2 (g) + 4H+ (aq) + 4e- → 2H2O (l)
O2 (g) + 2H2O (l) + 4e- → 4OH- (aq)
H2 (g) → 2H+ (aq) + 2e-
H2 (g) + 2OH- (aq) → 2H2O (l) + 2e-
Acidic fuel cells have...
H+ electrolyte
OH- electrolyte
oxygen is a strong...
oxidising agent
reducing agent
In the image is an acidic hydrogen fuel cell. The half reaction occurring at the identified electrode is...
O2 (g) + 4H+ (aq) + 4e- → 2H2O (l)
O2 (g) + 2H2O (l) + 4e- → 4OH- (aq)
H2 (g) → 2H+ (aq) + 2e-
H2 (g) + 2OH- (aq) → 2H2O (l) + 2e-
In the image is an acidic hydrogen fuel cell. The electrode the arrow is pointing to is the...
Positive electrode
Negative electrode
What type of reaction occurs in a fuel cell?
Exothermic
Endothermic
What energy conversion occurs in fuel cells.
Chemical energy → Electrical Energy
Chemical energy → Thermal energy → Kinetic energy → Electrical Energy
What energy conversion occurs in a combustion engine?
Chemical energy → Electrical Energy
Chemical energy → Thermal energy → Kinetic energy → Electrical Energy
What is produced by a hydrogen-oxygen fuel cell?
Water and Carbon Dioxide
Carbon Dioxide
Water
