(Feltre) - Oxidação e Redução.

por Bergamotinha OwO Sex 24 Dez 2021, 14:45

Boaa tarde, colegas!
Não estou conseguindo entender essa questão de oxidação direito... eu cheguei a aprender o assunto, porém, não me lembro direito sobre... e peguei agr pra revisar e não consigo fazer...
Segue:
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(FELTRE) Na seguinte equação química:

(Feltre) - Oxidação e Redução. Svg+xml;base64,<?xml version='1.0' encoding='UTF-8'?>
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a) o elemento zinco oxida-se e reage como agente oxidante.
b) o elemento zinco oxida-se e reage como agente redutor.
c) o elemento zinco reduz-se e reage como agente oxidante.
d) o ácido clorídrico é um agente redutor.
e) a equação é classificada como reversível.

Resp.: Sem gabarito.

Obrigado! cheers

por gusborgs Sex 24 Dez 2021, 15:18

Feliz Natal Bergamotinha Very Happy

Reagentes:
Zn : NOX 0
HCl: H com NOx +1 e Cl com NOx -1
Produtos:
ZnCl2: Cl com NOx -1 (-2 total do Cl) e Zn com NOx +2
H2 com NOx 0

Então temos que:
Zn aumentou o Nox e doou eletrons, ou seja, oxidou
Como ele oxidou, ele é o agente redutor
H diminuiu o NOx, recebendo elétrons, ou seja, reduziu
Como ele reduziu, é o agente oxidante

Agente oxidante: causou a oxidação de outro.

por Bergamotinha OwO Sáb 25 Dez 2021, 11:21

Olá colega Gusborgs!! Feliz Natal, antes de mais nada, para vc tbm!!

Bom...
Então, quando o cara oxida, ele será, automaticamente, o agente redutor?
E, quando ele reduz, ele será o agente oxidante? E, com isso, ele causa a oxidação do redutor, no caso, o zinco...

Vlww colega! cheers

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