Question

The compound used for gravimetric estimation of Cu(II) is :

• A. Cu2(SCN)2
• B. Cu2O
• C. Cu2I2
• D. Cu2CO3

Answer 1

Answer: (C)

Cu2I2

Answer 2

Ag+ + 2S2O32–$\longrightarrow$[Ag(S2O3)2]3– ; soluble complex is formed.