Write the balancexd chemical equation for the following
i. Silver chloride is reacted with sodium cyanide and the product thus formed is allowed to react with zine in an alkline medium .
ii Cobalt (II) solution reacts with `KNO_(2)` in acetic acid medium

Explanation

(i). Silver goes into the complex, and then it is displaced with zinc.
`AgCl+2NaCNtoNaCl+Na[Ag(CN)_2]`
`2Na[Ag(CN)]+2ZntoNa_2[Zn(CN)_4]+2Agdarr`
(ii). Yellow precipitate is formed.
`KNO_2+CH_3COOHtoCH_3COOK+KNO_2`
`CoCL_2+2KNO_2toCo(NO_2)_2+2KCl`
`Co(NO_2)_2+2KNO_2toCo(NO_2)_3+NO+H_2O`
`Co(NO_2)_3+3KNO_2+K_3[Co(NO_2)_6]`