Excess of AgNO 3 was added to the following compounds: (i) PtCl 4 ⋅ 2 NH 3 (ii) PtCl 2 ⋅ 2 NH 3 (iii) PtCl 2 ⋅ 4 NH 3 and 0,0 and 2 moles of AgCl per mole of the compound was precipitated. What is the secondary valency of the compounds (i), (ii) and (iii)?

Question

Excess of AgNO 3 was added to the following compounds: (i) PtCl 4 ⋅ 2 NH 3 (ii) PtCl 2 ⋅ 2 NH 3 (iii) PtCl 2 ⋅ 4 NH 3 and 0,0 and 2 moles of AgCl per mole of the compound was precipitated. What is the secondary valency of the compounds (i), (ii) and (iii)? (A) 6,4 and 4 respectively (B) 4,6 and 4 respectively (C) 4,4 and 6 respectively (D) 6,6 and 4 respectively

Tardigrade Admin · Accepted Answer

The structure of first complex is [Pt(NH ..3)2 Cl 4] as it does not give Cl - ions on reaction with AgCl thus secondary valency =6 The structure of second complex [ Pt ( NH 3)2 Cl 2] as it does not give Cl - ions on reaction with AgCl thus secondary valency =4 The structure of third complex is [ Pt ( NH 3)4] Cl 2. As is gives two ions on reaction with AgNO 3 thus secondary valency =4

Q. Excess of AgNO3​ was added to the following compounds: (i) PtCl4​⋅2NH3​ (ii) PtCl2​⋅2NH3​ (iii) PtCl2​⋅4NH3​ and 0,0 and 2 moles of AgCl per mole of the compound was precipitated. What is the secondary valency of the compounds (i), (ii) and (iii)?

6,4 and 4 respectively

4,6 and 4 respectively

4,4 and 6 respectively

6,6 and 4 respectively