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  4. Which give (s) yellow precipitate with K2CrO4 ?

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Q. Which give (s) yellow precipitate with $ {{K}_{2}}Cr{{O}_{4}} $ ?

BVP MedicalBVP Medical 2009

Solution:

Among the given ions, only $ B{{a}^{2+}} $ gives yellow precipitate of barium chromate, when treated with $ {{K}_{2}}Cr{{O}_{4}} $ . $ B{{a}^{2+}}+{{K}_{2}}Cr{{O}_{4}}\xrightarrow{{}}\underset{yellow\,ppt.}{\mathop{BaCr{{O}_{4}}}}\,+2{{K}^{+}} $