Definieer die term elektrolise - NSC Technical Sciences - Question 5 - 2020 - Paper 2
Question 5
Definieer die term elektrolise.
Is die elektrolise van koper(II)chloried 'n spontane of 'n nie-spontane reaksie?
Verduidelik die antwoord op VRAAG 5.2.
Skryf die ... show full transcript
Worked Solution & Example Answer:Definieer die term elektrolise - NSC Technical Sciences - Question 5 - 2020 - Paper 2
Step 1
Definieer die term elektrolise.
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Answer
Elektrolise is 'n proses waarin elektriese energie omgeskakel word in chemiese energie, of die ontbinding van 'n ioniese stof wanneer 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
Nie-spontane
Step 3
Verduidelik die antwoord op VRAAG 5.2.
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Answer
Dit vereis elektriese energie en is 'n endothermiese reaksie.
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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Answer
5.5.1 Anode
5.5.2 Katode
Step 6
Vir die sel hierbo skryf neer.
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Answer
5.7.1 2Cl⁻ → Cl₂ + 2e⁻
5.7.2 Cu²⁺ + 2e⁻ → Cu
Step 7
Definieer die term reduseermiddel.
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Answer
Reduseermiddel is 'n stof wat geoksideer word/verlies van elektrone ondergaan.
