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cells and batteries exam questions and complete SolutionsStudy online at https://quizlet.com/_di7t61
1. State the main components of an -A positive electrode.
electrochemical cells.(3) -A negative electrode.
-An electrolyte.
2. Give an example and a use of a -Lithium ion battery.
rechargeable cell. (2) -Uses: Powering portable electronics.
3. Give the half equations for the an- -Anode Half Equation: H2+2e’2H+
ode and cathode reactions in the
hydrogen-oxygen fuel cell. (2) -Cathode Half Equation:
O2+4e’2O2Cathode Half Equation:
O2+4e’2O2
4. Suggest why batteries should not -(metal / alkaline waste) can be toxic /
be put in household waste. harmful / corrosive
5. suggest an advantage for each -zinc-carbon) cheap(est)
battery: -(alkaline) long(est) lasting
-zinc - (nickel-metal hydride) rechargeable
-alkaline
-niclkle
6. The voltage produced by the cell -temperature (of electrolyte / solution)
in Figure 2 depends on the type - concentration (of electrolyte / solution)
of electrodes and the type of elec-
trolyte. Suggest one other factor
that could affect the voltage pro-
duced.(1)
7. Give two advantages of using hy- -no toxic chemicals to dispose of at the
drogen fuel cells instead of using end of the cell's life
rechargeable cells to power cars -take less time to refuel (than to
*(2) recharge rechargeable cells)
- travel further before refuelling (than
before recharging
1/3
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