Which of the following metal carbonates has the highest molar solubility?
A - HSC - SSCE Chemistry - Question 3 - 2019 - Paper 1
Question 3
Which of the following metal carbonates has the highest molar solubility?
A. Calcium carbonate
B. Copper(II) carbonate
C. Iron(II) carbonate
D. Lead(II) carbonat... show full transcript
Worked Solution & Example Answer:Which of the following metal carbonates has the highest molar solubility?
A - HSC - SSCE Chemistry - Question 3 - 2019 - Paper 1
Step 1
Identify the carbonates
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Answer
The four metal carbonates provided in the question are:
Calcium carbonate (CaCO₃)
Copper(II) carbonate (CuCO₃)
Iron(II) carbonate (FeCO₃)
Lead(II) carbonate (PbCO₃)
Step 2
Determine solubility trends
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Answer
The solubility of carbonates generally decreases down group 2 of the periodic table. However, for transition metals, the solubility can vary significantly. Typically, calcium carbonate is known to have low solubility, while copper(II), iron(II), and lead(II) carbonates can be somewhat more soluble.
Step 3
Conclusion
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Answer
After examining these carbonates, Copper(II) carbonate tends to have a higher molar solubility compared to the others listed. Thus, the answer is:
