UAS KIMIA ANALITIK I
Quiz
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Chemistry
•
University
•
Medium
Lisa Utami
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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Suatu sampel Timbal seberat 0,6342 g diendapkan sebagai PbSO4. Endapan dikeringkan dan ternyata beratnya 0,4381 g. Hitung persentase Pb dalam bijih!
40,9%
47,2%
50%
50,4%
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
100 mL HCl 0,1 M dititrasi oleh NaOH 0,1 M. Hitung pH larutan pada penambahan 150 mL NaOH
4,3
7
9,7
12,3
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Standarisasi dari 20 mL larutan asam sulfat membutuhkan 30 mL 0,1 N NaOH. Berapakah Normalitas dari H2SO4?
0,24 N
0,15 N
0,5 N
0,7 N
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Indikator yang digunakan dalam menetapkan kadar klorida dan bromida pada metode Fajans adalah.....
Kalium Hidroksida
Fluorescein
Kalium Permanganat
Kalium Kromat
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Metode titrasi yang menggunakan ion Fe3+ untuk membentuk kompleks yang berwarna merah dengan tiosianat SCN- adalah.....
Metode Mohr
Metode Volhard
Metode Fajans
Metode Bohr
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Dalam sebuah percobaan standarisasi, 0,5067 g standar primer Na2CO3 yang dengan tepat menetralkan 27,86 mL asam klorida. Berapakah Normalitas dari HCl!
Na2CO3 + 2HCl menjadi 2NaCl + H2CO3
0,4876 N
0,3432 N
0,2335 N
0,1555 N
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pengotoran endapan oleh zat lain yang larut dalam pelarut, pengotor ini sebenarnya tidak mengendap tetapi hanya terbawa oleh endapan analiti disebut......
Kopresipitasi
Presipitasi
Postpresipitasi
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