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प्रश्न
Native silver metal forms a water solution complex with dilute solution of Na CN in the presence of
विकल्प
Nitrogen
Oxygen
Carbon dioxide
Carbon
MCQ
उत्तर
Oxygen
Explanation:
Silver forms a water-soluble complex with NaCN in the presence of air car oxygen.
\[\ce{4Ag + 8NaCN + 2H2O + O2 -> \underset{Soluble complex}{4Na[Ag(CN)2]} + 4NaOH}\]
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