Statement-1 :`Cu^(2+)` and `Cd^(2+)` ions form complexes with excess of potassium cyanide solution. Statement-2 : On passing `H_(2)S` gas, complex `[C

Question

Statement-1 :`Cu^(2+)` and `Cd^(2+)` ions form complexes with excess of potassium cyanide solution. Statement-2 : On passing `H_(2)S` gas, complex `[C

Statement-1 :`Cu^(2+)` and `Cd^(2+)` ions form complexes with excess of potassium cyanide solution.
Statement-2 : On passing `H_(2)S` gas, complex `[Cu(CN)_(4)]^(3-)` is not effected but `[Cd(CN)_(4)]^(2-)` gives yellow precipitated.
A. STATEMENT-1 is true, STATEMENT-2 is true and STATEMENT-2 is correct explanation for STATEMENT-1
B. STATEMENT-1 is true, STATEMENT-2 is true and STATEMENT-2 is not correct explanation for STATEMENT-2
C. STATEMENT-1 is true, STATEMENT-2 is false
D. STATEMENT-1 is false, STATEMENT-2 is true

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Related Questions

An alcoholic solution of potassium cyanide was allowed to react with monoiodo derivative of ethane. The product formed will be

2 Answers 6 Views

Which of the following is the major product when tert-butyl chloride is treated with potassium cyanide in aqueous ethanolic solution ?

2 Answers 4 Views

Reaction of ethyl bromide with sodium cyanide gives a mixture of ethyl cyanide and ethyl isocyanide because :

2 Answers 13 Views

Barium ions, `CN^(-) and Co^(2+)` form an ionic complex.If this complex is 75% ionised in aqueous solution with Vant Hoff factor (i) equal to four and

2 Answers 9 Views

Geometrical shapes of the complexes (p),(q),(r) formed by the following reactions respectively are : `Cu^(2+)(aq)+KCN(aq)("excess")to"complex"(p)` `Co

2 Answers 4 Views

Statement-1:In cyanide process for the extraction of gold and silver from their native ores, the cyanide solution acts as a reducing agent to reduce t

2 Answers 4 Views

Statement-1:White crystalline precipitate of silver sulphite dissolves if sulphite ions are added in excess. Statement-2:Sulphite ions decolourise the

2 Answers 4 Views

Consider the following statement: `S_(1)`:`Cu^(2+)` ions are reduced to `Cu^(+)` by potassium iodide and potassium cyanide both, when taken in excess

2 Answers 5 Views

Statement-1:Baryta water becomes turbid on passing `CO_(2)` gas through it but turbidity becomes clear on passing more `CO_(2)` gas. Statement-2 : Car

2 Answers 8 Views

Statement-1 :White crystalline precipitate of silver sulphite dissolves, if sulphite ions are added in excess Statement-2 :Sulphite ions decolourise t

2 Answers 4 Views

Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Correct Answer - B
Statement-1 :`Cu^(2+) +6CN^(-) to [Cu(CN)_(4)]^(3-) + (CN)_(2) , Cd^(2+) + 4CN^(-) to [Cd(CN)_(4)]^(2-)`
Statement-2 :`[Cu(CN)_(4)]^(3-)` being stable complex is not effected by `H_(2)S` gas but `[Cd(CN)_(4)]^(2-)` is not so stable and gives yellow precipitate with `H_(2)S`.
`[Cd(CN)_(4)]^(2-)+H_(2)S to CdS darr ("yellow")+2H^(+) + 4CN^(-)`