Correct for above reaction Ag, + ,mathop {NaCN}limits_{(0.5,% )} , + ,{H₂}O, + ,{O₂} to Soluble

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General Principles and processes of Isolation of Elements

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Correct for above reaction

$Ag\, + \,\mathop {NaCN}\limits_{(0.5\,\% )} \, + \,{H_2}O\, + \,{O_2} \to $ Soluble complex $\xrightarrow{{Zn}}\mathop B\limits_{complex} \, + \,Ag$

$A = Na [Ag(CN)_2]$

$B = Na_2[Zn(CN)_4]$

Oxidation-reduction process

All of these

Solution

The Parkes process is a process for removing silver from lead.

Electrolytic process gives the highest-purity metal product as well as the best recovery of valuable impurities. It is used for copper, nickel, lead, gold, and silver.

Reactions occurs in extraction of silver-

$A g_2 S+4 N a C N \rightarrow 2 N a\left[A g(C N)_2\right]+N a_2 S$ (reversible reaction)

$2 N a\left[A g(C N)_2\right]+Z n \rightarrow N a_2\left[Z n(C N)_4\right]+2 A g$

here we can also use $K$ instead of $Na$.

But by heating of $N a\left[ Ag ( CN )_2\right]$, Ag is not produced as on and heating $Na \left[ Ag ( CN )_2\right]$ forms a complex product of $Ag$ and not simple $Ag$.

Standard 12

Chemistry

If the impurity in a metal has a greater affinity for oxygen and is more easily oxidised than the metal, then the purification of metal may be carried out by

easy

In goldschmidt reaction, certain metallic oxides are reduced to the metallic state by heating with

easy

Match Column $-I$ with Column $-II$ and select the correct answer using the codes given below.

Column $-I$ Column $-II$

$(i)$ Iron and copper $(P)$ Poling

$(ii)$ Zirconium and Titanium $(Q)$ Bessemerisation

$(iii)$ Lead and Tin $(R)$ Van – arkel

$(iv)$ Copper and Tin $(S)$ Liquation

hard

$Ag_2S + NaCN \to (A), (A) + Zn \to (B)$

$(B)$ is a metal. Hence, $(A)$ and $(B)$ are

hard

In the electrolytic refining of copper, $Ag$ and $Au$ are found

easy

Column $-I$	Column $-II$
$(i)$ Iron and copper	$(P)$ Poling
$(ii)$ Zirconium and Titanium	$(Q)$ Bessemerisation
$(iii)$ Lead and Tin	$(R)$ Van – arkel
$(iv)$ Copper and Tin	$(S)$ Liquation

Correct for above reaction $Ag\, + \,\mathop {NaCN}\limits_{(0.5\,\% )} \, + \,{H_2}O\, + \,{O_2} \to $ Soluble complex $\xrightarrow{{Zn}}\mathop B\limits_{complex} \, + \,Ag$

Solution

Similar Questions

If the impurity in a metal has a greater affinity for oxygen and is more easily oxidised than the metal, then the purification of metal may be carried out by

In goldschmidt reaction, certain metallic oxides are reduced to the metallic state by heating with

Match Column $-I$ with Column $-II$ and select the correct answer using the codes given below. Column $-I$ Column $-II$ $(i)$ Iron and copper $(P)$ Poling $(ii)$ Zirconium and Titanium $(Q)$ Bessemerisation $(iii)$ Lead and Tin $(R)$ Van – arkel $(iv)$ Copper and Tin $(S)$ Liquation

$Ag_2S + NaCN \to (A), (A) + Zn \to (B)$ $(B)$ is a metal. Hence, $(A)$ and $(B)$ are

In the electrolytic refining of copper, $Ag$ and $Au$ are found

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Correct for above reaction

$Ag\, + \,\mathop {NaCN}\limits_{(0.5\,\% )} \, + \,{H_2}O\, + \,{O_2} \to $ Soluble complex $\xrightarrow{{Zn}}\mathop B\limits_{complex} \, + \,Ag$

Match Column $-I$ with Column $-II$ and select the correct answer using the codes given below.

Column $-I$ Column $-II$

$(i)$ Iron and copper $(P)$ Poling

$(ii)$ Zirconium and Titanium $(Q)$ Bessemerisation

$(iii)$ Lead and Tin $(R)$ Van – arkel

$(iv)$ Copper and Tin $(S)$ Liquation

$Ag_2S + NaCN \to (A), (A) + Zn \to (B)$

$(B)$ is a metal. Hence, $(A)$ and $(B)$ are