Consider the following sequence of reactions : M^2+(aq.) --NH4Cl(s) + (NH4)2CO3 sol.-- Q↓ --CH3COOH followed by addition of (NH4)2C2O4-- R↓. Which of the following cation can form ppt. Q but does no

Question

Consider the following sequence of reactions : M^2+(aq.) --NH4Cl(s) + (NH4)2CO3 sol.--> Q↓ --CH3COOH followed by addition of (NH4)2C2O4--> R↓. Which of the following cation can form ppt. Q but does not form ppt. 'R' ?

Prashant Kotian · Accepted Answer

Correct answer: D. Mg2+, Ca2+, Sr2+, Ba2+ form ppt CaCO3, SrCO3, BaCO3 and filtrate Mg2+. The ppts form CaC2O4, SrC2O4 and filtrate Ba^2+(aq.).

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