A precipitate of calcium oxalate (CaC_2O_4) w | vedclass

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Question

(D) Calcium oxalate $(CaC_2O_4)$ is a salt of a strong base $(Ca(OH)_2)$ and a weak acid (oxalic acid,$H_2C_2O_4$).It dissolves in strong mineral acid

Vedclass · Accepted Answer

$CH_3COOH$

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(D) Calcium oxalate $(CaC_2O_4)$ is a salt of a strong base $(Ca(OH)_2)$ and a weak acid (oxalic acid,$H_2C_2O_4$).It dissolves in strong mineral acids like $HCl$ and $HNO_3$ because the oxalate ions $(C_2O_4^{2-})$ react with $H^+$ ions to form the weak acid $H_2C_2O_4$,shifting the equilibrium to the right.However,acetic acid $(CH_3COOH)$ is a weak acid and does not provide a sufficiently high concentration of $H^+$ ions to significantly shift the equilibrium and dissolve the precipitate.

$A$ precipitate of calcium oxalate $(CaC_2O_4)$ will not dissolve in which of the following?

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