Bab 3 Elektrokimia
Authored by Azmina J
Science
9th - 12th Grade
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah aliran elektron dalam sel elektrolitik?
Terminal positif -> Terminal negatif
Terminal negatif -> Terminal positif
Katod -> Anod
Tiada aliran elektron
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berikut adalah syarat penyaduran logam KECUALI
Elektrolit mengandungi logam penyaduran
Elektrod anod adalah logam penyaduran
Elektrod anod adalah item untuk disadur
Elektrod katod adalah item untuk disadur
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dalam elektrolisis larutan Natrium Bromida Pekat (NaBr2), apakah ion yang dipilih untuk dinyahcaskan di katod?
Ion Natrium
Ion Bromida
Ion Hidroksida
Ion Hidrogen
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pilih pemerhatian yang BETUL bagi elektrolisis pepejal Plumbum Bromida (PbBr2)
Pepejal kelabu terbentuk
Tiada perubahan
Gas berwarna perang terhasil
Gas tidak berwarna terhasil
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suatu elektrolisis larutan Kuprum Nitrat (Cu(NO3)) dijalankan menggunakan elektrod kuprum sebagai anod dan elektrod karbon sebagai katod. Apakah ion yang dinyahcaskan di anod?
Ion Kuprum
Ion Nitrat
Ion Hidrogen
Ion Hidroksida
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah bahan yang ditambah ke dalam Aluminium Oksida (Al2O3) untuk menurunkan takat lebur ketika proses pengekstrakkan aluminium dijalankan?
Bauksit
Kriolit
Grafit
Karbon
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pilih penyataan yang betul tentang unsur-unsur berikut:
1. Zink
2. Ferum
3. Natrium
Ion Zink berada lebih rendah daripada ion Ferum dalam siri Elektrokimia
Logam Natrium adalah lebih elektropositif berbanding logam Zink
Dalam sel kimia, terminal positif adalan natrium manakala terminal negatif adalah ferum
Ion Ferum berada lebih tinggi daripada Ion Natrium dalam Siri Elektrokimia.
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