Find in which case the Zn pole mass is greater

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    Mass Pole Redox
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In the reactions involving zinc (Zn) with FeCl2 and HgCl2, Zn displaces iron (Fe) in the first reaction, resulting in a decrease in the mass of the Zn pole. In contrast, when Zn reacts with HgCl2, it forms ZnCl2 and a mercury compound, which also leads to a reduction in the mass of the Zn pole. The reactivity of Zn is higher than that of Hg, influencing the extent of the reaction and the mass change. The stoichiometric ratios and the nature of the products are crucial in determining the final mass of the Zn pole. Ultimately, the mass of the Zn pole is reduced in both cases, but the extent of reduction may vary depending on the specific reactions.
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Homework Statement


A pole of Zn is put in a FeCl2 solution and in a HgCl2 solution. FInd in which case the mass of the pole of zinc has become grater and when less

Homework Equations


Zn+FeCl2->ZnCl2+Fe
Zn+HgCl2->ZnCl2Hg

The Attempt at a Solution


As Zn is much active than Hg than it goes in the Hg compound to form ZnCl2. By making the mass of the pole less. But I'm not sure about the answer as the two reactions seem to be similar.
 
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Two things to consider - whether the reaction takes place at all (reactivity series), how does the mass of the solid change during the reaction (depends on the masses of ions involved and their stoichiometric ratio).
 
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