Chemistry - Salt Analysis Question with Solution | TestHub

ChemistrySalt AnalysisTEST OF CATIONS, Group 3, 4, 5, 6, 0Medium2 minPYQ_2007

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Passage / Comprehension

Paragraph:Redox reaction play a pivotal role in chemistry and biology. The values of standard redox potential $(E^{\circ})$ of two half-cell reactions decide which way the reaction is expected to proceed. A simple example is a Daniel cell in which zinc goes into solution and copper gets deposited. Given below are a set of half-cell reactions (acidic medium) along with their $E^{\circ} (V$ with respect to normal hydrogen electrode) values. Using this data obtain the correct explanations to Questions 14-19.

I_{2} + 2 e^{-} ⟶ 2 I^{-} Cl_{2} + 2 e^{-} ⟶ 2 Cl^{-} Mn^{3 +} + e^{-} ⟶ Mn^{2 +} Fe^{3 +} + e^{-} ⟶ Fe^{2 +} O_{2} + 4 H^{+} + 4 e^{-} ⟶ 2 H_{2} O E^{\circ} = 0.54 E^{\circ} = 1.36 E^{\circ} = 1.50 E^{\circ} = 0.77 E^{\circ} = 1.23

Question:Sodium fusion extract, obtained from aniline, on treatment with iron (II) sulphate and $H_{2} SO_{4}$ in presence of air gives a prussian blue precipitate. The blue colour is due to the formation of

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Stream:JEE_ADVSubject:ChemistryTopic:Salt AnalysisSubtopic:TEST OF CATIONS, Group 3, 4, 5, 6, 0

⏱ 2mℹ️ Source: PYQ_2007

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