
Kimia Kelompok 3
Authored by Classemia 2
Chemistry
9th - 12th Grade

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25 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pada larutan CdSO4 menggunakan elektrode karbon dihasilkan 280 mL gas (STP) di anode. Massa endapan yang terbentuk di katode sebanyak... (Ar Cd = 112 g/mol)
1,4 g
2,8 g
5,6 g
12,4 g
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sebanyak 2L larutan NaCl dielektrolisis menggunakan elektrode karbon selama 2 jam. Jika muatan listrik yang digunakan sebesar 0,1 F, pH larutan setelah dielektrolisis adalah
2 - log 5
4 - log 5
12 + log 5
10 + log 5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oksidasi logam perak
Oksidasi logam kromium
pembentukan logam Cl2
Reduksi perak klorida
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
-1,76V
+1,76V
+0,14V
-0,14V
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Pada peristiwa korosi logam besi mengalami oksidasi, sedangkan yang mengalami reduksi adalah
H20
O2
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Logam berikut yang dapat mencegah korosi pada pipa yang ditanam dalam tanah adalah
Mg
Sn
Cu
Pb
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Beberapa metode pencegahan korosi dalam kehidupan sehari-hari sebagai berikut.
1) Pengecatan
2) Melumuri dengan oli
3) Pembalutan dengan oli
4) Pelapisan dengan timah
5) Pelapisan dengan kromium
Metode yang tepat untuk mencegah korosi pada setang sepeda ditunjukan oleh angka
2
3
1
4
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