Question

Suggest diff chemical processeses used for obtaining a metal from its oxidees for metals in the middle of the reactivity series and metals towards the top of the reactivity series. Support your answer with one example

Answer 1

Here is your answer:

The chemical processes which is used to extract metal of middle reactivity series ate:

1) Roasting: It is the process in which ore is heated in the presence of oxygen.

2) Calcination: It is the process in which ore is directly heated in the absence of oxygen.

3) You can also displace the metal with the help of highly reactive metals like sodium, potassium,etc

The chemical process which is used to extract metals of highly reactivity series is electrolytic refining.

HOPE IT HELPS YOU.

Answer 2

Answer:

1 ) .Reactivity series :

It is series of decreasing order of metals' reactivity. Hydrogen is place in middle of series. Above hydrogen metals are more reactive in nature below are less. Metal which is more reactive it displaces a less reactive metal from its salt solution.

2 ) .

In order to obtaining a metal from its  oxides for metals in the middle of the reactivity series then metals towards oxides of such metals can be reduced with coke (carbon) which acts as a reducing agent.

For instance :

2 Fe₂O₃ + 3 C  ⇒ 4 Fe + 3 CO₂.

In order to obtaining a metal from its  oxides for metals in the high of the reactivity series their oxides are reduced to metals by the process of electrolysis

For instance :

Electrolysis of sodium chloride :

Na⁺ + e⁻  ⇒ Na   [ At cathode ]

2 Cl⁻ ⇒ Cl₂ + 2 e⁻   [ At anode ]