Choose the correct Statements from the following:
(A) $Ethane - 1, 2 - diamine$ is a chelating ligand.
(B) Metallic aluminium is produced by electrolysis of aluminium oxide in presence of cryolite.
(C) Cyanide ion is used as ligand for leaching of silver.
(D) Phosphine act as a ligand in Wilkinson catalyst.
(E) The stability constants of ${Ca}^{2 +}$ and ${Mg}^{2 +}$ are similar with EDTA complexes.
Choose the correct answer from the options given below:

Question

Choose the correct Statements from the following:
(A)

Ethane - 1, 2 - diamine

is a chelating ligand.
(B) Metallic aluminium is produced by electrolysis of aluminium oxide in presence of cryolite.
(C) Cyanide ion is used as ligand for leaching of silver.
(D) Phosphine act as a ligand in Wilkinson catalyst.
(E) The stability constants of

{Ca}^{2 +}

and

{Mg}^{2 +}

are similar with EDTA complexes.
Choose the correct answer from the options given below:

Aicharya · Accepted Answer

Statement A Ethane− 1 , 2 −diamine is a chelating agent as it contains two coordinating sites that are two nitrogen atoms which donate their lone pairs of electrons and can form a 5 -membered ring with the metal ion. Statement B Based on Hall-Heroults process- The Hall-Heroult process is widely used in the extraction of aluminium. In Hall-Heroults process, pure Al 2 O 3 is mixed with CaF 2 or Na 3 AlF 6 . This results in lowering the melting point of the mixture and increases its ability to conduct electricity. A steel vessel with a lining of carbon and graphite rods is used. Statement C Cyanide ion is used as ligand for leaching of silver. The cyanide process, which is also known as the Macarthur-forest process, is widely used in extracting gold or silver from the ores by dissolving them in a dilute solution of potassium cyanide or sodium cyanide. Statement D Rh PPh 3 3 Cl Wilkinson's catalyst Statement E Ca + + ion forms more stable complex with EDTA Hence option C is the answer.

Choose the correct Statements from the following: (A) Ethane - 1 , 2 - diamine is a chelating ligand. (B)…

Solution