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Year 12 Unit 3 Area of Study 1
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Define "renewable"
Renewable is a description of something that is able to be replenished at the same rate or faster than its consumption.
Calculate:
17300
What is the enthalpy of the reverse reaction?
+10kJ/mol
Write a balanced thermochemical equation for the complete combustion of butane (C4H10).
Either is acceptable:
What is the difference between a primary and secondary cell?
A secondary cell is rechargeable.
What is the reaction taking place at the cathode?
Ag+(aq) + e- -> Ag(s)
What is the reaction taking place at the anode?
Zn(s) -> Zn2+ + 2e-
What is the oxidant in the cell?
Ag+
What is the purpose of the salt bridge in a galvanic cell?
Adding a salt bridge completes the circuit allowing current to flow. Anions in the salt bridge flow toward the anode and cations in the salt bridge flow toward
What is the reducing agent?
Zn
What are the standard conditions the electrochemical series were formed in?
1M, 25 degrees C and 100 kPa
What is the formula to find the energy required to heat an amount of water?
Q = mct
Name a difference between a galvanic cell and fuel cell.
Wire and membrane, continuous fuel supply, storage
Answer the question.
Rhubarb can be easily replenished.
Answer the question.
Ethanol is the reducing agent
Answer the question.
B
Answer the question.
A
Is electrode P the anode or cathode? Explain your answer.
Anode
Define what is meant by an endothermic reaction.
An endothermic reaction is a reaction that absorbs energy from the surroundings resulting in a net positive change in enthalpy.
Define what is meant by an exothermic reaction.
An exothermic reaction is a reaction that releases energy into the surroundings resulting in a net negative change in enthalpy.
Answer the question:
D
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