Which of the following is a redox reaction?
$N a C l + A g {N O}_{3} \to A g C l + N a {N O}_{3}$
$M n O_{2} + 4 H C l \to M n {C l}_{2} + 2 H_{2} O + {C l}_{2}$
$A l {C l}_{3} + 3 {N H}_{4} O H \to A l {(O H)}_{3} + 3 {N H}_{4} C l$
$C u {C l}_{2} + H_{2} S \to C u S + 2 H C l$

Question

Which of the following is a redox reaction-NaCl-Ag-NO-3-rightarrow AgCl-Na-NO-3-Mn-O-2-4HClrightarrow Mn-Cl-2-2-H-2-O-Cl-2-Al-Cl-3-3-NH-4-OHrightarrow Al-OH-3-3-NH-4-ClCu-Cl-2-H-2-Srightarrow CuS-2HCl

Toppr Admin · Accepted Answer

MnO2-4HCl-x21D2-MnCl2-2H2O-Cl2In above reaction- Cl goes from -x2212-1 to 0- Chloride ion is oxidized and is the reducing agent- Mn goes from -4 to -2- Mn is reduced and is the oxidizing agent- Thus Option D is correct-

Which of the following is a redox reaction?NaCl+AgNO3→AgCl+NaNO3MnO2+4HCl→MnCl2+2H2O+Cl2AlCl3+3NH4OH→Al(OH)3+3NH4ClCuCl2+H2S→CuS+2HCl

MnO2+4HCl⇒MnCl2+2H2O+Cl2In above reaction, Cl goes from −1 to 0. Chloride ion is oxidized and is the reducing agent. Mn goes from +4 to +2. Mn is reduced and is the oxidizing agent. Thus Option D is correct.

Which of the following is a redox reaction?
$N a C l + A g {N O}_{3} \to A g C l + N a {N O}_{3}$
$M n O_{2} + 4 H C l \to M n {C l}_{2} + 2 H_{2} O + {C l}_{2}$
$A l {C l}_{3} + 3 {N H}_{4} O H \to A l {(O H)}_{3} + 3 {N H}_{4} C l$
$C u {C l}_{2} + H_{2} S \to C u S + 2 H C l$

$M n O_{2} + 4 H C l \Rightarrow M n C l_{2} + 2 H_{2} O + C l_{2}$
In above reaction, $C l$ goes from $- 1$ to $0$ . Chloride ion is oxidized and is the reducing agent. $M n$ goes from $+ 4$ to $+ 2$ . $M n$ is reduced and is the oxidizing agent. Thus Option $D$ is correct.