Which of the following is redox reaction- -1- AgNO3 - NaCl -61630- -61614- AgCl - NaNO3 -2- CaCO3 - H2SO4 -61630- -61614- CaSO4 - CO2 - H2O -3- 2Na - 2H2O -61630- -61614- 2NaOH - H2 -61613- -4- Cu-OH-2 - 2HCl -61630- -61614- CuCl2 - 2H2O

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Electrolytic Refining

Which of the ...

Question

Which of the following is redox reaction?
(1) AgNO3
+ NaCl  AgCl + NaNO3
(2) CaCO3
+ H2SO4  CaSO4
+ CO2
+ H2O
(3) 2Na + 2H2O  2NaOH + H2
(4) Cu(OH)2
+ 2HCl  CuCl2
+ 2H2O

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A g {N O}_{3} + N a C l \to N a {N O}_{3} + A g C l

{P b ({N O}_{3})}_{2} + 2 K I \to P b I_{2} + 2 K N O_{3}

2 N a O H + H_{2} {S O}_{4} \to {N a}_{2} {S O}_{4} + 2 H_{2} O

A g N O_{3} + N a B r \to N a N O_{3} + A g B r

B a C l_{2} + H_{2} S O_{4} \to B a S O_{4} + 2 H C l

A g N O_{3} + N a C l \to A g C l + N a N O_{3}

N a O H + H C l \to N a C l + H_{2} O

What type of reactions are represented by the following equations

(a) $C a O + C O_{2} ⟶ C a C O_{3}$

(b) $2 N a + 2 H_{2} O ⟶ 2 N a O H + H_{2}$

(d) $N H_{4} N O_{2} ⟶ N_{2} + 2 H_{2} O$

(e) $C u S O_{4} + 2 N a O H ⟶ C u (O H)_{2} + N a_{2} S O_{4}$

2 N a + 2 H_{2} O \to 2 N a O H + H_{2}

2 N a O H + C l_{2} \to N a C l + N a O C l + H_{2} O

4 O H^{-} \to O_{2} + 2 H_{2} O + 4 e^{-}

2 C l^{-} \to C l_{2} + 2 e^{-}

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