Cobalt salt + yellow ppt

CHEMISTRY · Single correct · ICSE · Chemistry · Analytical Chemistry

Problem

Cobalt salt +

\text{KNO}_2 + \text{CH}_3\text{COOH} \longrightarrow

yellow ppt. The yellow precipitate is: (1) Potassium cobaltinitrate (2) Potassium cobaltinittite (3) Cobalt nitrite (4) Cobalt nitrate