A mixture when rubbed with oxalic acid smells like vinegar. It contain

1.	A mixture when rubbed with oxalic acid smells like vinegar. It contains salt of :
Answer» sulphate nitrate nitrite acetate Solution :Oxalic acid reacts with acetate salt (e.g. SODIUM acetate) to form ACETIC acid which has vinegar smell. `{:(2CH_(3)COONA,+,(COOH)_(2),),("Sod. acetate",,"oxalic aicd",),(,,darr,),(2CH_(3)COOH,+,(COONa)_(2),),("Acetic acid.",,"Sod. OXALATE",),(("vinegar smell"),,,):}`

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