DP Chemistry Questionbank

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• 18M.3.hl.TZ2.13c: Fuel cells have a higher thermodynamic efficiency than octane. The following table gives some...
• 18M.3.hl.TZ1.14a.ii: State the factor that limits the maximum current that can be drawn from this cell and how...
• 18M.3.hl.TZ1.14a.i: Complete the half-equations on the diagram and identify the species moving between the electrodes.
• 17N.3.hl.TZ0.20b: Outline one advantage and one disadvantage of the methanol cell (DMFC) compared with a...
• 17N.3.hl.TZ0.20a: Deduce the half-equations and the overall equation for the reactions taking place in a direct...
• 17M.3.hl.TZ2.17c.iii: Explain how the flow of ions allows for the operation of the fuel cell.
• 17M.3.hl.TZ2.17c.ii: Outline the function of the proton-exchange membrane (PEM) in the fuel cell.
• 17M.3.hl.TZ2.17c.i: Deduce the half-cell equations occurring at each electrode during discharge.
• 17M.3.hl.TZ1.22c: Identify one factor that affects the voltage of a cell and a different factor that affects the...
• 17M.3.hl.TZ1.22b.ii: Outline the difference between primary and rechargeable cells.
• 17M.3.hl.TZ1.22b.i: Suggest a way in which they are similar.
• 17M.3.hl.TZ1.22a: Deduce half-equations for the reactions at the two electrodes and hence the equation for the...
• 16N.3.hl.TZ0.21b: A concentration cell is an example of an electrochemical cell. (i) State the difference between...
• 16N.3.hl.TZ0.21a: The Geobacter species of bacteria can be used in microbial fuel cells to oxidise aqueous...
• 16M.3.hl.TZ0.20b: Suggest one advantage and one disadvantage of a fuel cell over a lead–acid battery as an energy...
• 16M.3.hl.TZ0.20a: One type of fuel cell contains a proton exchange membrane between electrodes and uses aqueous...
• 14M.3.hl.TZ1.9b: (i)     Identify the two half-equations that take place at the positive electrode (cathode) and...
• 14M.3.hl.TZ1.9a: State the energy change conversion involved in a fuel cell.
• 14M.3.sl.TZ1.9a: State the energy change conversion involved in a fuel cell.
• 14M.3.sl.TZ1.9b: (i)     Identify the two half-equations that take place at the positive electrode (cathode) and...
• 14N.3.sl.TZ0.10: The diagrams below show a hydrogen-oxygen fuel cell with an alkaline electrolyte and a lead-acid...
• 13N.3.hl.TZ0.13b: State the physical property of the products that allows this process to be reversed and the cell...
• 13N.3.hl.TZ0.13a: State the equation, including state symbols, for the reaction that takes place when the cell is...
• 10N.3.sl.TZ0.C4b: A different type of cell has the half-equation...
• 10N.3.sl.TZ0.C4a: State the half-equations for the reactions taking place at the negative electrode (anode) and the...
• 10N.3.sl.TZ0.C4c: Both fuel cells and rechargeable batteries offer great potential for the future. Compare these...
• 10N.3.sl.TZ0.C4d: Suggest two problems associated with using hydrogen gas in a fuel cell.
• 09N.3.sl.TZ0.C4b: Identify a physical property of Cd(OH)2 which allows this process to be reversed and the battery...
• 09M.3.hl.TZ1.C2b: Describe the composition of the electrodes and state the overall cell equation of the...
• 09M.3.hl.TZ1.C2c: Compare a fuel cell and a lead-acid battery, with respect to possible concerns about pollution of...
• 09M.3.hl.TZ1.C2a: State the half-equations occurring at each electrode in the hydrogen-oxygen fuel cell in an...
• 09M.3.sl.TZ2.C3c: Discuss one similarity and one difference between fuel cells and rechargeable...
• 09M.3.sl.TZ2.C3b: Describe the migration of ions taking place at the two electrodes in the lithium-ion battery when...
• 09M.3.sl.TZ2.C3a: Describe how this is overcome in the lithium-ion battery.
• 12M.3.sl.TZ1.C2a: Compare fuel cells and rechargeable batteries giving one similarity and one...
• 12M.3.sl.TZ1.C2c: A common type of fuel cell uses hydrogen and oxygen with an acidic electrolyte. State the...
• 12M.3.sl.TZ1.C2d: The electrodes of fuel cells and rechargeable batteries have a feature in common with...
• 12M.3.hl.TZ2.C2c: Lead–acid batteries are heavy. Much lighter rechargeable cells are nickel–cadmium batteries used...
• 12M.3.sl.TZ2.C2a: A fuel cell can be made using an electrolyte of aqueous sodium hydroxide with porous electrodes...
• 12M.3.sl.TZ2.C2c: (i)     Explain why fuel cells are less damaging to the environment than nickel–cadmium...
• 12M.3.sl.TZ2.C2b: Electricity can also be generated from a lead–acid storage battery. The electrolyte is a solution...
• 11N.3.sl.TZ0.C3a: Describe the composition of the electrodes in a hydrogen-oxygen fuel cell.
• 11N.3.sl.TZ0.C3b: State the half-equation at each electrode in the hydrogen-oxygen alkaline cell. Positive...