ULANGAN HARIAN ELEKTROLISIS

Quiz
•
Chemistry
•
12th Grade
•
Easy
Rajamuddin Sidabalok
Used 1+ times
FREE Resource
10 questions
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1.
OPEN ENDED QUESTION
5 mins • 10 pts
Tuliskan reaksi elektrolisis lengkap sampai reaksi sel dari
a. Larutan NaClO3 dengan elektroda grafit
b. Larutan NiSO4 dengan elektroda tembaga
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2.
OPEN ENDED QUESTION
5 mins • 10 pts
Pada elektrolisis leburan CaCl2 dengan elektroda grafit dialirkan arus listrik sebesar 10 Ampere selama 1 jam ( Ar,Ca = 40 gram/mol, Ar.Cl = 35,5 gram/mol )
Tentukanlah a. Reaksi elektrolisis lengkap leburan CaCl2 dengan elektroda grafit.
b. Massa endapan yang dihasilkan di katoda.
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3.
OPEN ENDED QUESTION
5 mins • 10 pts
Larutan Ag2SO4 sebanyak 2 liter dielektrolisis menggunakan elektroda inert dengan muatan listrik 965 coloumb ( Ar. Ag = 108 gram/mol, S = 32 gram/mol, O = 16 gram/mol ). Tentukanlah
a. Massa endapan yang terjadi di katoda
b. Volume gas yang dihasilkan pada keadaan standar ( 00 C, dan 1 atm )
c. pH larutan yang dihasilkan pada elektrolisis tersebut.
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4.
OPEN ENDED QUESTION
5 mins • 5 pts
Tentukan waktu yang dibutuhkan menghasilkan 1,17 gram Nikel dari suatu proses elektrolisis larutan Ni(NO3)2 jika arus listrik yang digunakan 8 ampere ( Ar.Ni = 59 gram/mol )
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5.
OPEN ENDED QUESTION
5 mins • 10 pts
Sejumlah arus listrik yang sama dialirkan kedalam dua sel elektrolisis yang berbeda sesuai pada gambar
Jika ke dalam larutan CrCl2 diendapkan 1,84 gram logam crom maka tentukanlah massa endapan perak di sel 1. ( Ar. Ag = 108 gram/mol, Cr = 52 gram/mol )
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6.
OPEN ENDED QUESTION
10 mins • 1 pt
Pada reaksi elektrolisis larutan perak nitrat dengan elektroda karbon dialirkan arus listrik dengan muatan listrik sebesar 965 coloumb. ( Ar.Ag = 108 gram/mol ).
Tentukanlah :
a. berapa berat zat yang diendapkan di katoda ?
b. berapa liter gas yang dihasilkan di anoda ?
c. Jika volume larutan 500 mL, berapa kira-kira pH larutan ?
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7.
OPEN ENDED QUESTION
5 mins • 10 pts
Arus listrik dialirkan melalui larutan NiSO4 menghasilkan 3,175 gram endapan nikel. Jika diketahui Ar. Ag = 108 gram/mol dan Ar.Ni = 59 gram/ mol. Tentukanlah massa logam Ag yang mengendap jika arus litrik yang sama dialirkan pada AgNO3 ?
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