When gold is leached from an ore, the gold is present in the solution as cations. Zinc is much higher in the electromotive series than gold and is therefore thermodynamically capable of reducing gold cations to metallic gold, the zinc being converted to zinc cations. No substantial activation energy is required for this reaction, and the reaction therefore proceeds smoothly, until all the available metallic zinc has been: consumed; so thoroughly covered with deposited gold that the solution can no longer contact any of the underlying metallic zinc; and/or all the gold cations have been removed from the leachate.
If the zinc salt is soluble and the analogous silver salt is not, silver will displace the zinc as the silver salt precipitates out. For example, zinc chloride is soluble, but the solubility of silver chloride is very low. If silver nitrate is added to a zinc chloride solution, silver chloride will precipitate out, leaving zinc nitrate in solution.
zinc
Zinc displace iron. Iron displace copper.
because in table of re-activity of metals it is below zinc
Zinc and iron sulphate do react. Zinc is higher in the reactivity series than iron. It can therefore displace sulphate from the iron and 'take' the sulfate. Zinc + Iron Sulphate ------------> Zinc Sulphate + Iron The reactivity series is as follows: Potassium Sodium Lithium Calcium Magnesium Aluminium Zinc Iron Tin Lead Copper Silver Gold Platinum There are many clever ways to remember this too. This is the metal reactivity series BTW(by the way)
No, zinc will displace copper from copper sulphate but not the other way around.
If the zinc salt is soluble and the analogous silver salt is not, silver will displace the zinc as the silver salt precipitates out. For example, zinc chloride is soluble, but the solubility of silver chloride is very low. If silver nitrate is added to a zinc chloride solution, silver chloride will precipitate out, leaving zinc nitrate in solution.
zinc
Copper is a metal that cannot replace zinc from zinc sulfate solution. This is because copper has a lower reactivity than zinc and cannot displace it in a chemical reaction.
Zinc metal will displace mercury from most mercury compounds, forming liquid mercury and the corresponding zinc compounds.
because in table of re-activity of metals it is below zinc
Zinc displace iron. Iron displace copper.
Yes , slowly.
More reactive than copper.
An Element higher in the Reactivity Series will displace an Element lower in the Reactivity Series in a compound. Example. Potassium + Zinc Sulphate --> Potassium Sulphate + Zinc
The two do not react. Zinc is more active than copper and thus copper can not displace zinc.
because in table of re-activity of metals it is below zinc