
SEL VOLTA
Presentation
•
Chemistry
•
10th Grade
•
Easy
Sulis Tyaningsih
Used 5+ times
FREE Resource
6 Slides • 4 Questions
1
By Sulis Tyaningsih
2
3
4
Sel Volta kemudian dikembangkan oleh Daniel dan mengalami beberapa kali penyempurnaan dengan hasil akhir sesuai gambar di samping
5
Reaksi redoks yang terjadi pada sel Volta dapat ditulis dengan 2 cara:
Persamaan reaksi
Zn + Cu2+ → Zn2+ + Cu
Notasi sel
Zn/ Zn2+ // Cu2+ / Cu
6
Multiple Choice
Pada Sel Volta terjadi perubahan energi dari ... menjadi ....
kimia menjadi listrik
fisika menjadi kimia
kimia menjadi fisika
kimia menjadi mekanik
cahaya menjadi listrik
7
Multiple Choice
Sel kering (dry cell) disamping menggunakan anoda ....
C
Pt
Zn
Cu
Ni
8
Multiple Choice
Pada baterei alkalin, reaksi oksidasi di anoda ditulis .....
Zn → Zn2+ + 2e
Ni → Ni2+ + 2e
Zn2+ → Zn + 2e
Zn + 2OH- → Zn(OH)2 + 2e
Mn → Mn2+ + 2e
9
Multiple Choice
Diketahui harga potensial beberapa elektroda :.
Mg2+ + 2e → Mg Eo = -2,37 volt
Cu2+ + 2e → Cu Eo = +0,34 volt
Nilai potensial sel (Eosel ) dari reaksi : Cu2+ + Mg → Cu + Mg2+ adalah …
+2.71 volt
+2,03 volt
+ 1,47 volt
- 2,03 volt
- 2,71 volt
10
By Sulis Tyaningsih
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