Question

In the following reaction, identify X:

\[\ce{Cr2O^{2-}7 + X ->[H+] Cr^{3+} + H2O + Oxidized product of X}\]

पर्याय

• \[\ce{CrO^{2-}4}\]

• \[\ce{SO^{2-}4}\]

• \[\ce{S^{2-}}\]

• \[\ce{Fe^{2+}}\]

Answer 1

\[\ce{Fe^{2+}}\]

Explanation:

\[\ce{Cr2O^{2-}7 + X ->[H+] Cr^{3+} + H2O + Oxidized product of X}\]

\[\ce{CrO^{2-}7 + Fe^{2+} ->[H+] Cr^{3+} + H2O + Fe^{3+}}\]