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Chemistry
10th Grade
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22 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Na pilha eletro-química sempre ocorre
Passagem de elétrons, no circuito externo, do ânodo para o cátodo.
Reação de neutralização.
Movimento de elétrons no interior da solução eletrolítica.
Reação com diminuição de calor.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
um eletrodo corresponde
à solução.
à placa metálica.
ao conjunto placa metálica mergulhada a uma solução.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
O potencial de oxidação (Eoxi) de um eletrodo mede sua tendência a
perder elétrons.
ganhar elétrons.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
O potencial de redução (Ered) de um eletrodo mede sua tendência a
perder elétrons.
ganhar elétrons.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Em uma pilha o FLUXO de elétrons ocorre do eletrodo que possui
maior Eoxi para o de menor Eoxi.
maior Ered para o de menor Ered.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Para uma pilha o eletrodo que PERDE elétrons é denominado
cátodo.
ânodo.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Em uma pilha o FLUXO de elétrons ocorre do eletrodo que possui
maior Eoxi para o de menor Eoxi.
maior Ered para o de menor Ered.
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