At the start of the day, a student set up a galvanic cell using two electrodes: nickel, Ni, and metal X. This set-up is shown in the diagram below. Consider the following alternative metals that could be used to replace metal X: 1. zinc, Zn 2. lead, Pb 3. cadmium, Cd 4. copper, Cu At the end of the day, the student checked the colour of the solution in Half-cell 1 and observed that the solution was a darker green colour. Which of the alternative metals could change the colour of Half-cell 1 to become a darker green?

SSCE VCE Chemistry Redox Reactions: At the start of the day, a stude

At the start of the day, a student set up a galvanic cell using two electrodes: nickel, Ni, and metal X - VCE - SSCE Chemistry - Question 5 - 2019 - Paper 1

Question 5

At the start of the day, a student set up a galvanic cell using two electrodes: nickel, Ni, and metal X. This set-up is shown in the diagram below. Consider the fol... show full transcript

Worked Solution & Example Answer:At the start of the day, a student set up a galvanic cell using two electrodes: nickel, Ni, and metal X - VCE - SSCE Chemistry - Question 5 - 2019 - Paper 1

Step 1

Consider the alternative metals

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Answer

We need to analyze the alternatives:

Zinc (Zn): This metal tends to oxidize in solutions containing nickel and could potentially alter the color, but it typically leads to a lighter solution rather than a darker green.
Lead (Pb): This metal does not significantly undergo reactions resulting in darker green solutions when replacing metal X.
Cadmium (Cd): Cadmium has properties that might result in a darker color change due to its reactivity.
Copper (Cu): Copper is known to react in such a way that it can lead to a more intense green due to its compounds in solution.

Therefore, cadmium and copper would likely contribute to a darker green solution in this electrochemical setup.

Step 2

Identify the correct alternatives

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Answer

From the analysis, the metals that could replace X and lead to a darker green color in Half-cell 1 are:

Metals 2 and 4 (Lead and Copper). Thus, the correct answer corresponds to the options for metals 2 and 4 being the most viable choices.

At the start of the day, a student set up a galvanic cell using two electrodes: nickel, Ni, and metal X - VCE - SSCE Chemistry - Question 5 - 2019 - Paper 1

Worked Solution & Example Answer:At the start of the day, a student set up a galvanic cell using two electrodes: nickel, Ni, and metal X - VCE - SSCE Chemistry - Question 5 - 2019 - Paper 1

Consider the alternative metals

Identify the correct alternatives

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