In the analysis of Group V basic radicals (), confirming the specific alkaline earth metal relies on — Qualitative and Quantitative Analysis Chemistry Question
Question
In the analysis of Group V basic radicals ($Ba^{2+}, Sr^{2+}, Ca^{2+}$), confirming the specific alkaline earth metal relies on selective precipitation. Which of the following matches between the cation and its confirmatory test are correct?
Answer: A,B,C
💡 Solution & Explanation
Barium is confirmed by precipitating yellow Barium chromate ($BaCrO_4$). Strontium is confirmed by precipitating white Strontium sulphate ($SrSO_4$). Calcium is confirmed by precipitating white Calcium oxalate ($CaC_2O_4$). Calcium does not form a precipitate with $K_2CrO_4$ in dilute acetic acid due to the high solubility product of $CaCrO_4$, making option D incorrect.
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