The number of redox reactions from the following equations are-a- H 2 S - Fe 3- - Fe 2- - S- - H -b- I - - I O 3 - - H - I 2 - H 2 Oc- Bi s - N O 3 - - H - N O 2 - Bi 3- - H 2 Od- I - - O 2 g - H 2 O - I 2 - - O He- Cu s - Au - Au s - Cu 2-

A. nbsp; Fe ^ 3+ is reduced to Fe ^ 2+ and H _ 2 S is oxidised to S .b. nbsp; I ^⊖ nbsp; is oxidised to I _ 2 and ...

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Types of Redox Reactions

The number of...

Question

The number of redox reactions from the following equations are:
a. $H_{2} S + {F e}^{3 +} ⟶ {F e}^{2 +} + S ↓ + H^{\oplus}$
b. $I^{⊖} + I O_{3}^{⊖} + H^{\oplus} ⟶ I_{2} + H_{2} O$
c. $B i (s) + N O_{3}^{⊖} + H^{\oplus} ⟶ N O_{2} + {B i}^{3 +} + H_{2} O$
d. $I^{⊖} + O_{2} (g) + H_{2} O ⟶ I_{2} + ⊖ O H$
e. $C u (s) + {A u}^{\oplus} ⟶ A u (s) + {C u}^{2 +}$

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C r_{2} O_{7}^{2 -} + H^{+} + I^{-} \to C r^{3 +} + I_{2} + H_{2} O

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M n O^{4 -} + S O_{3}^{2 -} + H^{+} \to M n^{2 +} + S O_{4}^{2 -} + H_{2} O

M n O^{4 -} + H^{+} + B r^{-} \to M n^{2 +} + B r_{2} + H_{2} O

I^{-}

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N O_{3}^{-} + F e^{2 +} + H^{+} \to N O + F e^{3 +} + H_{2} O

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