Redoxreaktion kupferchlorid und aluminium?

Chlor und Sauerstoff sind sich ja nicht mal so unähnlich. Beide können Verbindungen mit brennbaren Stoffen eingehen, eine Kerze kann sogar in Chlor brennen. Somit sollte damit auch eine redoxreaktion wie bei thermit möglich sein, nur dass eben Chlor und nicht Sauerstoff “transportiert”:

3CuCl2 + 2Al ==> 3Cu + 2AlCl3

Allerdings habe ich gerade herausgefunden dass sich Aluminiumchlorid bei 262°C wieder zersetzt und die reaktion erreicht sicher deutlich höhere Temperaturen, also kommt es wahrscheinlich gar nicht zu dieser Bildung.

Magnesiumchlorid ist aber bei 1400°C noch stabil, also sollte das gehen:

CuCl2 + Mg ==> MgCl2 + Cu

Was haltet ihr davon?

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JenerDerBleibt
2 years ago

Could. However, in the reaction of CuCl2 and Mg only about half as much energy should be released as in the thermit itself. Accordingly, the reaction will not proceed so strongly exothermically and explosively (if it can maintain itself at all)

In addition, the alkali metal and alkaline earth metal chlorides are known to behave somewhat differently than their oxides. So it’s hard to predict what’s happening.

Adelyne
2 years ago

The chemical equation you specified describes the redox reaction between copper chloride (CuCl2) and magnesium (Mg). In this reaction, copper chloride acts as an oxidizing agent and emits electrons to magnesium, whereby it becomes a reducing agent.

The reaction produces magnesium chloride (MgCl2) and copper (Cu) as products. Magnesium chloride is a white solid which is formed in this reaction, and copper is a metallic element which has a higher electron affinity than copper chloride.

The chemical equation of the reaction is:

CuCl2 + Mg -> MgCl2 + Cu

It shows the ratio of the substances used and the products formed.

J0T4T4
2 years ago

Personally, the substances involved in the reaction are rather inconvenient, too unhealthy and possibly also expensive.