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How does NaCN act as a depresent in preventing ZnS forming the

Question

How does $N a CN$ act as a depresent in preventing $Z n S$ forming the froth?

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How does

N a CN

act as a depresent in preventing

Z n S

forming the froth?

10 mins ago

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10 mins ago

Text solutionVerified

N a CN

combines with

Z n S

to form a complex,

N a_{2} [Z n (CN)_{4}]

on the surface of

Z n S

and thus prevents it form forming the froth

Z n S + 4 N a CN \to N a_{2} [Z n (CN)_{4}] + N a_{2} S

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Question Text	How does $N a CN$ act as a depresent in preventing $Z n S$ forming the froth?
Answer Type	Text solution:1
Upvotes	150