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Potassium Permanganate

Which of the ...

Question

Which of the following is the conjugate base of oxallic acid :

C_{2} O_{4}^{- 2}

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C_{2} O_{4}^{- 1}

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C_{2} O_{4}^{- 3}

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None

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Solution

The correct option is A $C_{2} O_{4}^{- 2}$
Oxalic acid is a reducing agent and its conjugate base, known as oxalate $(C_{2} O_{4}^{- 2}$ ), is a chelating agent for metal cations. Typically, oxalic acid occurs as the dihydrate with the formula $C_{2} H_{2} O_{4} .2 H_{2} O$ .
Excessive ingestion of oxalic acid or prolonged skin contact can be dangerous.
Hence option A is correct.

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