Escusez moi pour le dérangement,on m’a donné trois exercices à faire en physique-chimie j’en ai fait deux mais je ne suis pas sûre d’avoir juste et je comprends rien à l’exercice 5 si vous pouvez m’aider ou me guider je vous en serai reconnaissante merci d’avance de votre attention.
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Ответ:
Decomposition and redox
Explanation:
2Ni₂O₃ ⟶ 4Ni + 3 O₂
This can be classed as a decomposition reaction, because a compound is decomposing into simpler substances.
It can also be classed as a redox reaction. The oxidation number of Ni decreases (reduction) from +3 in Ni₂O₃ to 0 in Ni, while the oxidation number of O increases (oxidation) from -2 in Ni₂O₃ to 0 in O₂.
Among the many types of reactions are:
Combination Decomposition Single displacement Double displacement Reduction-oxidation Precipitation