A VCE chemistry student sets up a galvanic cell using two standard half cells with half reactions - VCE - SSCE Chemistry - Question 14 - 2002 - Paper 1
Question 14
A VCE chemistry student sets up a galvanic cell using two standard half cells with half reactions.
half cell 1: Cr^{3+}(aq) + e^{-}
ightleftharpoons Cr^{2+}(aq)
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Worked Solution & Example Answer:A VCE chemistry student sets up a galvanic cell using two standard half cells with half reactions - VCE - SSCE Chemistry - Question 14 - 2002 - Paper 1
Step 1
Half cell 1: Suitable Electrode Material
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Answer
For half cell 1, consisting of the Cr^{3+}/Cr^{2+} reduction reaction, platinum is a suitable electrode material due to its inert nature and ability to facilitate electron transfer during the redox process.
Step 2
Half cell 2: Suitable Electrode Material
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Answer
For half cell 2, where chromium is oxidized, chromium as the electrode material is appropriate as it participates in the redox reaction, making option B, Platinum for half cell 1 and Chromium for half cell 2, the correct answer.
