Which of the following combinations of metals would produce the highest reading on the voltmeter?
(A) Tin and zinc
(B) Copper and zinc - HSC - SSCE Chemistry - Question 8 - 2007 - Paper 1
Question 8
Which of the following combinations of metals would produce the highest reading on the voltmeter?
(A) Tin and zinc
(B) Copper and zinc
Worked Solution & Example Answer:Which of the following combinations of metals would produce the highest reading on the voltmeter?
(A) Tin and zinc
(B) Copper and zinc - HSC - SSCE Chemistry - Question 8 - 2007 - Paper 1
Step 1
Determine Electrode Potential
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Answer
To determine which combination of metals produces the highest reading on the voltmeter, we need to consider the electrode potential of each metal pair. Copper has a higher electrode potential compared to zinc, making it a better choice for generating voltage.
Step 2
Evaluate the Options
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Answer
Tin and Zinc: Tin has a relatively low electrode potential compared to copper. The result would not be as high as with copper.
Copper and Zinc: Since copper has a significantly higher electrode potential than zinc, this combination will produce a higher reading on the voltmeter.
Step 3
Conclusion
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Answer
Based on the analysis, the combination of metals that produces the highest reading on the voltmeter is (B) Copper and zinc.