Multiple Choice
Which pair of compounds is insoluble in water?
5. Classification & Balancing of Chemical Reactions
Solubility Rules
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Based on your understanding of the solubility rules, which of the following ionic compounds will be insoluble?
A
Zinc chloride
B
Manganese (V) chlorate
C
Lead (II) sulfate
D
Gallium acetate
Verified step by step guidance1
Review the solubility rules for common ionic compounds. Solubility rules help predict whether a compound will dissolve in water.
Identify the ions present in each compound: Zinc chloride (ZnCl₂), Manganese (V) chlorate (Mn(ClO₃)₅), Lead (II) sulfate (PbSO₄), and Gallium acetate (Ga(C₂H₃O₂)₃).
Apply the solubility rules: Chlorides (Cl⁻) are generally soluble, except for those of silver, lead, and mercury. Chlorates (ClO₃⁻) are typically soluble. Acetates (C₂H₃O₂⁻) are generally soluble.
Consider sulfates (SO₄²⁻): Most sulfates are soluble, but there are exceptions, including lead sulfate (PbSO₄), which is insoluble.
Conclude that based on the solubility rules, Lead (II) sulfate (PbSO₄) is the compound that is insoluble in water.
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