RESPONSI KIMOR JUDUL 2&3
Authored by Aldi Ramadan
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University
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12 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 8 pts
Teknik pemurnian suatu zat padat dari campuran atau pengotornya yang dilakukan dengan cara mengkristalkan kembali zat tersebut setelah dilarutkan dalam pelarut yang cocok disebut ?
A. Augmentasi
B. Pembekuan
C. Rekristalisasi
D. Kristalisasi
E. Phasing Out
2.
MULTIPLE CHOICE QUESTION
10 sec • 8 pts
Apa fungsi norit pada praktikum kali ini ?
A. Sampel
B. Pelarut
C. Penyaring
D. Adsorban
E. Penetral Racun
3.
MULTIPLE CHOICE QUESTION
10 sec • 8 pts
Berikut merupakan faktor kelarutan zat, kecuali ?
A. Adanya Buffer
B. Suhu
C. Luas Permukaan
D. Adanya Zat Pengotor
E. Polaritas
4.
MULTIPLE CHOICE QUESTION
20 sec • 8 pts
Hitunglah %Recovery apabila sampel awal memiliki berat sekitar 2,105 gram dan sampel rekristalisasi sekitar 1,353 gram ?
A. 155,58 %
B. 64,28 %
C. 35,73%
D. 55,58%
E. 50,00%
5.
MULTIPLE CHOICE QUESTION
10 sec • 8 pts
Sampel manakah yang digunakan dalam uji rekristalisasi ini ?
A. Asam Salisilat, Asam Sulfat dan Asam Asetilsalisilat
B. Asam Salisilat, Asam Benzoat dan Anilin
C. Asam Benzoat, Toluena dan Benzena
D. Asam Salisilat, Asam Asetilsalisilat dan Asam Benzoat
E. Asam Salisilat, Asetalnilida dan Asam Benzoat
6.
MULTIPLE CHOICE QUESTION
10 sec • 8 pts
Kriteria pelarut yang cocok untuk dilakukan rekristalisasi adalah ?
A. Dapat melarutkan sampel pada suhu ruang dan kristal pada suhu beku
B. Dapat melarutkan sampel pada suhu tinggi dan kristal pada suhu beku
C. Dapat melarutkan sampel pada suhu tinggi dan kristal pada suhu ruang
D. Dapat melarutkan sampel pada suhu rendah dan kristal pada suhu tinggi
E. Dapat melarutkan sampel pada suhu ruang dan kristal pada suhu ruang
7.
MULTIPLE CHOICE QUESTION
10 sec • 8 pts
Alat apa yang digunakan untuk menentukan titik leleh suatu senyawa ?
A. AVO-Multimeter
B. Melting Point Tester
C. Disintegration Tester
D. Thermometer
E. Potentiometer
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