AIIMS2019Chemistry-Coordination Compounds
AIIMS 2019 Chemistry Precipitation Reactions MCQ Question
Type: MCQ-conceptual-Easy-Class 12
Which of the following does not give ppt with CrO₄²⁻
A
Ca²⁺
B
Sr²⁺
Correct Answer
Option A
Detailed Explanation
Calcium ions (Ca²⁺) do not form a precipitate with chromate ions (CrO₄²⁻) because calcium chromate (CaCrO₄) is soluble in water. In contrast, strontium ions (Sr²⁺) can form strontium chromate (SrCrO₄), which is insoluble and precipitates out of solution. This distinction is crucial for understanding the solubility rules of various metal chromates in aqueous solutions.
Found an issue with this question?