
redokselektrokim
Authored by SULIZ UKI
Chemistry
12th Grade
Used 1+ times

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45 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fungsi jembatan garam dalam sel volta adalah ....
jembatan/jalur muatan positif (kation)
jembatan/jalur muatan negatif (anion)
Menjaga keseimbangan kation dan anion
Mengurangi jumlah kation dan anion
Menambah jumlah kation dan anion
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah sendok disepuh dengan perak dalam larutan perak nitrat dengan kuat arus 10 ampere selama 10 menit. Banyaknya perak yang melapisi sendok tersebut adalah .... (Ar Ag = 108)
108x10x10
96500
108x10x96500
10x60
108x10x10x60
96500
10x10x96500
108x60
10x60x96500
108x10
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada animasi proses sel volta, larutan CuSO4 dan ZnSO4 yang digunakan sebesar..... M
1
0,1
0,01
0,5
0,25
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan peristiwa elektrolisis berikut!
(1) Lelehan KCl dengan elektrode platina
(2) Larutan NaNO3 dengan elektrode karbon
(3) Lelehan CaCl2 dengan elektrode platina
(4) Larutan FeSO4 dengan elektrode karbon
Pasangan reaksi di anoda yang menghasilkan gas O2 terjadi pada nomor....
(1) dan (2)
(1) dan (3)
(2) dan (3)
(2) dan (4)
(3) dan (4)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui potensial elektroda standart berikut:
Fe3+(aq) + e → Fe2+(aq) Eo = + 0,77 Volt
Br2(aq) + 2e → 2Br-(aq) Eo = + 1,07 Volt
I2(s) + 2e → 2I-(aq) Eo = + 0,54 Volt
Cu2+(aq) + 2e → Cu(s) Eo = + 0,34 Volt
Reaksi sel yang dapat berlangsung spontan adalah …
2Fe2+(aq) + I2(s) → 2Fe3+(aq) + 2I-(aq)
Cu2+(aq) + 2I-(aq) → Cu(s) + I2(s)
I2(s) + 2Br-(aq) → 2I-(aq) + Br2(aq)
2Fe3+(aq) + Cu(s) → 2Fe2+(aq) + Cu2+(aq)
2Fe3+(aq) + 2Br-(aq) → 2Fe2+(aq) + Br2(aq)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan data persamaan reaksi berikut ini !
Al3+(aq) + 2e → Al(s) Eo = - 1,66 V
Zn2+ + 2e → Zn(s) Eo = - 0,76 V
Harga Eo sel dari kedua logam, jika membentuk sel Volta adalah …
+ 2,42 volt
– 0,90 volt
+ 0,96 volt
– 2,42 volt
+ 0,90 volt
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui potensial reduksi standar untuk:
Fe3+ / Fe2+ = + 0,77 Volt
Br2 / Br- = + 1,07 Volt
I2 / I- = + 0,54 Volt
Zn2+ / Zn = - 0,76 Volt
Cu2+ / Cu = + 0,34 Volt
Reaksi berikut yang mempunyai potensial terbesar adalah ….
2Fe2+(aq) + Br2 (aq) → 2Fe3+(aq) + 2Br-(aq)
2Fe3+(aq) + 2Br- (aq) → 2Fe2+(aq) + Br2 (aq)
2Fe3+(aq) + 2I- (aq) → 2Fe2+(aq) + I2 (s)
Br2 (aq) + 2I- (aq) → 2Br- (aq) + I2 (s)
Zn(s) + Cu2+(aq) → Cu(s) + Zn2+(aq)
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