What would you observe when zinc is added to a solution

Hint: When zinc is added to Iron (II) sulphate solution there is some chemical reaction that takes place between zinc and iron. Reaction depends on the basis of their reactivity. Let us find it out by help of one chemical reaction. Complete answer: Consider a general reaction between two metals: $A - B + C \to A - C + B$ This happens only when C is more reactive than B. This is a type of Displacement reaction. Here zinc metal is more reactive than Fe. So zinc displaces other metals easily. So a displacement reaction is a chemical reaction in which one element is replaced by another element in a chemical reaction. $Zn + FeS + AgCl \downarrow $ Here we see that sodium and silver displace each other and precipitate of AgCl is formed. Note: Displacement reaction has many applications. Some of them are thermite welding, steel making, extraction of metal and relief from acid indigestion. Generally a single displacement reaction is exothermic. We use the ‘’activity series’’ table to know whether displacement occurs or not.

If I have three aqueous ionic solutions in which I know that the cation is $\ce$, or something else to produce a precipitate, and testing these precipitates in other liquids, but I'm not sure what other liquids to try. Apart from the methods, Ringo already described, you can do a few other tests. Aluminium This is loosely translated from the German Probably the easiest test you can do is reacting it with Unfortunately sodium is also fluorescent, so keep your equipment clean and if you use a base, use potassium hydroxide instead. Also perform blind tests with all the chemicals involved, to see if they are clean enough. Other elements that can show fluorescence are $\ce$$ Again you can have a look at the pretty pictures at Magnesium A common problem with magnesium is, that all tests only work well and specific if you have a pure solution. Most heavier elements react more readily with the chemicals, than magnesium itself does. Another problem is, that salts from magnesium have no flame colouration at all. I am again loosely translating from * You can precipitate magnesium with It forms a yellow-green complex. This is only a specific test, if you know you have no heavier elements in your test tube. For example, aluminium forms the complex Another possibility is precipitation as There are two more tests, that I would consider best suitable, because of the pretty colour. The reaction of magnesium hydroxide with The reaction of magnesium hydroxide with Testing for magnesium is as...

When zinc is added to solution of iron (II) sulphate, the colour of iron sulphate solution changes from green to colourless. It is because zinc is more reactive than iron, therefore, it displaces iron from its solution and a grey precipitate of iron and a colourless solution of zinc sulphate is formed. Zn + FeSO 4 ⇾ ZnSO 4 + Fe.