Which of the following is not correctly match | vedclass

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(D) $1$. $Sodium$ nitroprusside $(Na_2[Fe(CN)_5NO])$ reacts with $S^{2-}$ ions to form a purple or violet complex,$[Fe(CN)_5NOS]^{4-}$. This is correc

Vedclass · Accepted Answer

Tollen's reagent - silver mirror with $H_3PO_4$

Vedclass · Answer

(D) $1$. $Sodium$ nitroprusside $(Na_2[Fe(CN)_5NO])$ reacts with $S^{2-}$ ions to form a purple or violet complex,$[Fe(CN)_5NOS]^{4-}$. This is correct.$2$. The brown ring complex is $[Fe(H_2O)_5NO]SO_4$,where $Fe$ is in the $+1$ oxidation state. This is correct.$3$. $Fe^{3+}$ ions react with $SCN^-$ to form a blood-red complex $[Fe(SCN)(H_2O)_5]^{2+}$. Basic ferric acetate also gives this test. This is correct.$4$. Tollen's reagent $([Ag(NH_3)_2]^+)$ is used to detect aldehydes by forming a silver mirror. $H_3PO_4$ is a phosphoric acid and does not reduce Tollen's reagent to form a silver mirror. This is incorrect.

Test	Result
Aqueous $NaOH$ is added, then heated gently.	Gas given off which turns damp red litmus paper blue.
Dilute $HCl$ is added.	Effervescence, gas given off which turns lime water milky and acidified $K_2Cr_2O_7$ paper green.

Which of the following is not correctly matched?

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$Fe(OH)_3 \downarrow + NaOH(\text{excess}) \longrightarrow \text{No reaction}$

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