UTS GRAVIMETRI
Authored by Hera Wati
Chemistry
11th Grade
Used 126+ times
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40 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tahapan analisis gravimetric pengendapan adalah….
(Pengendapan-pencucian -penyaringan-pengeringan dan pemijaran-penimbangan) endapan
(Pengendapan- penyaringan- pencucian-pengeringan dan pemijaran-penimbangan) endapan
(Pengendapan- penimbangan -pencucian -penyaringan-pengeringan dan pemijaran) endapan
(Pengendapan-pencucian -pengeringan dan pemijaran-penimbangan-penyaringan) endapan
(Pengendapan-pencucian -penyaringan -penimbangan-pengeringan dan pemijaran) endapan
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Penimbangan endapan dikatakan konstan jika perbedaan penimbangan….
0,2 gr
0,2 mg
0,2 mL
0,02 gr
0,02 mg
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Berikut yang bukan termasuk peralatan utama pada metode gravimetric adalah….
neraca
krusible
buret
desikator
furnace
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Zat pengering yang ditempatkan dalam desikator logam dalam analisis gravimetric adalah…
silika gel
kapur
garam
asam klorida
natrium hidroksida
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Proses dimana endapan dibiarkan bersentuhan/kontak dengan larutan induk pada suhu tinggi selama beberapa lama, untuk mendorong pertumbuhan kristal disebut....
isolasi
presipitasi
oklusi
digestion
filtration
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Berikut syarat-syarat yang harus dipenuhi dalam analisis gravimetric, kecuali...
Zat yang akan ditentukan harus dapat diendapkan dengan sempurna, endapan harus stabil dan sukar larut.
Endapan harus murni dan mudah disaring.
Endapan harus dapat diubah menjadi suatu senyawa dengan susunan kimia tertentu.
Endapan dapat dihitung secara stokiometri.
Endapan harus berbentuk kirstal.
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sebanyak 2,0008 gram sample garam BaCl2.xH2O dipanaskan pada suhu 500oC, didinginkan dan ditimbang, pekerjaan ini dilakukan berulang kali hingga didapat berat konstan sebesar 1,6997 gram, maka kadar air kristal dalam sample adalah….
14,05 %
15,05 %
16,05 %
17,05 %
18,05 %
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