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Write the equations . (i) Acidified s...

Write the equations .
(i) Acidified solution of `K_(2)Cr_(2)O_(7)` turns green when sodium sulphite is added to it.
(ii) Potassium ferricyanide is added to ferrous sulphate .
(iii) Silver chloride is treated with aqueous sodium cyanide .
(iv) Zinc is exposed to moist air .

Text Solution

Verified by Experts

(i) `Cr_(2)O_(7)^(-2)+3SO_(3)^(-2)+8H^(+) to 2Cr^(+3)+3SO_(4)^(-2)+4H_(2)O`
(ii) `K_(3)[Fe(CN)_(6)]+FeSO_(4) to Kfe[Fe(CN)_(6)]+K_(2)SO_(4)`
(iii) ` AgCl+2NaCN to Na[Ag(CN)_(2)]+NaCl`
(iv) ` 4Zn+2O_(2)+3H_(2)O+CO_(2) to underset("(Basic Zinc carbonate)")(ZnCO_(3).3Zn(OH)_(2))`
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