Conservation of mass and conservation of charge is seen in:

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

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

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

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

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

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Solution

The correct option is B $C l_{2} + 2 e^{-} \to 2 C l^{-}$
Conservation of mass and conservation of charge is seen in
$C l_{2} + 2 e^{-} \to 2 C l^{1 -}$
Conservation of mass: Total mass of reactants is equal to total mass of products
Total mass of reactants $=$ mass of a chlorine molecule $+$ mass of two electrons.
It is equal to the mass of two chloride ions (product)
Conservation of charge: Net charge on LHS is equal to net charge on RHS
Net charge on both sides is -2.

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Similar questions

H g_{2} C l_{2} + C l_{2} \to 2 H g^{+} + 4 C l^{-}

H g_{2} C l_{2} + 2 e^{-} \to 2 H g + 2 C l^{-}; E^{\circ} = 0.270 v o l t

H g_{2}^{2 +} \to 2 H g^{2 +} + 2 e^{-}; E^{\circ} = - 0.92 v o l t

2 H g \to H g_{2}^{2 +} + 2 e^{-}; E^{\circ} = - 0.79 v o l t

C l_{2} + 2 e^{-} \to 2 C l^{-}; E^{\circ} = 1.36 v o l t

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

{P t}^{2 +} + {2 C l}^{-} \to P t + {C l}_{2}, E_{c e l l} = - 0.15 V

{P t}^{2 +} + {2 e}^{-} \to P t, E = 1.20 V

2 F e_{2} + + C l_{2} \to 2 F e^{3 +} + 2 C l^{-}

F e^{3 +} + e^{-} \to F e^{2 +}; E = 0.77 V

C l_{2} + 2 e^{-} \to 2 C l^{-}; E = 1.36 V

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

P t^{2 +} + 2 C l^{-} \to P t + C l_{2}, E_{cell}^{o} = - 0.15 V

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