5.1 Definieer die term elektrolise - NSC Technical Sciences - Question 5 - 2020 - Paper 2
Question 5
5.1 Definieer die term elektrolise.
5.2 Is die elektrolise van koper(II)chloried 'n spontane of 'n nie-spontane reaksie?
5.3 Verduidelik die antwoord op VRAAG 5.2.... show full transcript
Worked Solution & Example Answer:5.1 Definieer die term elektrolise - NSC Technical Sciences - Question 5 - 2020 - Paper 2
Step 1
Definieer die term elektrolise.
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Elektrolise is 'n proses waar elektrisiteit gebruik word om chemiese energie te genereer. Dit impliseer die ontbinding van 'n ioniese stof wanneer 'n elektriese stroom daardeur gestuur word.
Step 2
Is die elektrolise van koper(II)chloried 'n spontane of 'n nie-spontane reaksie?
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Answer
'n Nie-spontane reaksie.
Step 3
Verduidelik die antwoord op VRAAG 5.2.
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Elektrolise vereis elektrisiteit as aandrywing, wat aandui dat dit 'n nie-spontane reaksie is. Hierdie tipe reaksie plaas slegs plaas wanneer 'n eksterne stroom toegepas word.
Step 4
Skryf die FORMULE van 'n elektroliet neer wat in die sel hierbo gebruik word.
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Answer
CuCl2
Step 5
By watter elektrode sal die volgende waarnemings gemaak word? Skryf slegs ANODE of KATODE neer.
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5.5.1 Anode
5.5.2 Katode
Step 6
Definieer die term reduseermiddel.
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Answer
Ek een stof wat die neiging het om elektrone te verloor en aldus ander stowwe te oksideer. Dit is die stof wat geoksideer word.
Step 7
Oksidasiehalfreaksie
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Answer
2Cl^- → Cl2 + 2e^-
Step 8
Reduksiehalfreaksie
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Answer
Cu^2+ + 2e^- → Cu
Step 9
Netto reaksie
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