Year 12 Unit 3 Area of Study 1 | Baamboozle - Baamboozle

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Name a difference between a galvanic cell and fuel cell.

Wire and membrane, continuous fuel supply, storage

Answer the question.

A

What is the formula to find the energy required to heat an amount of water?

Q = mct

Answer the question:

D

Is electrode P the anode or cathode? Explain your answer.

Anode

What is the reaction taking place at the anode?

Zn(s) -> Zn2+ + 2e-

Write a balanced thermochemical equation for the complete combustion of butane (C4H10).

Either is acceptable:

What are the standard conditions the electrochemical series were formed in?

1M, 25 degrees C and 100 kPa

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.

Calculate:

17300

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.

What is the difference between a primary and secondary cell?

A secondary cell is rechargeable.

What is the enthalpy of the reverse reaction?

+10kJ/mol

Answer the question.

B

What is the reaction taking place at the cathode?

Ag+(aq) + e- -> Ag(s)

Answer the question.

Rhubarb can be easily replenished.

What is the oxidant in the cell?

Ag+

Define "renewable"

Renewable is a description of something that is able to be replenished at the same rate or faster than its consumption.

What is the reducing agent?

Zn

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

Answer the question.

Ethanol is the reducing agent