Match the following. (I) HCO2^- - (P) Obtained through Solvay's process. (II) K2CO3 - (Q) Green colouration due to [Cr(H2O)6]3+ ion. (III) S2O3^2- + FeCl3 solution - (R) Reduces [Cu(C4H4O6)2]2- to

Question

Match the following. (I) HCO2^- -> (P) Obtained through Solvay's process. (II) K2CO3 -> (Q) Green colouration due to [Cr(H2O)6]3+ ion. (III) S2O3^2- + FeCl3 solution -> (R) Reduces [Cu(C4H4O6)2]2- to red ppt. (IV) SO3^2- + K2Cr2O7 / H+ -> (S) Green colouration. (V) Na2CO3 -> (T) Melts at 850°C.

Prashant Kotian · Accepted Answer

Correct answer: C. I matches R (HCO2^- reduces Fehling's), II matches T (K2CO3 melting point), III matches S (Fe3+ reduced to Fe2+ giving green colour), IV matches Q (Cr2O7^2- reduced to Cr3+), V matches P (Na2CO3 by Solvay's process).

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