JEE Main Chemistry question
Given , V; , V; , V (and, for reference, E^\circ_{Ce^{4+}/Ce^{3+}}>E^\circ_{MnO_4^-/Mn^{2+}}). What is the total score for the correct statement(s) below?
(a) [Score 1] is a sufficiently strong oxidant in acidic solution (pH ) to oxidize ion.
(b) [Score 2] ion cannot be titrated against standard solution if the medium is made acidic (pH ) by adding HCl.
(c) [Score 3] cannot oxidize in acidic medium (pH ).
(d) [Score 4] cannot be titrated against standard solution in acidic medium (pH ) in the presence of ion.
Solution
(a) is correct: E^\circ_{MnO_4^-/Mn^{2+}}(1.51 V)>E^\circ_{Fe^{3+}/Fe^{2+}}(0.77 V), so can readily oxidise . (b) is correct: in the presence of HCl, preferentially (and additionally) oxidises to (since
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