
Kimia Analisa B
Authored by Reva Edra Nugraha
Chemistry
University
Used 10+ times

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20 questions
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1.
FILL IN THE BLANK QUESTION
10 sec • 2 pts
Berapakah bilangan oksidasi dari Mg ?
2.
FILL IN THE BLANK QUESTION
30 sec • 3 pts
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
Manakah yang berperan sebagai reduktor ?
3.
FILL IN THE BLANK QUESTION
20 sec • 3 pts
Pada Metode Mohr, larutan standar yg dimasukkan ke dalam buret adalah?
4.
FILL IN THE BLANK QUESTION
20 sec • 3 pts
Indikator yang digunakan pada titrasi argentometri dengan metode Volhard adalah?
5.
FILL IN THE BLANK QUESTION
3 mins • 10 pts
Sampel seberat 1,963 g dilarutkan dalam HNO3 dan diencerkan hingga volume tertentu dalam labu takar 100 mL. Larutan sampel sebanyak 25,00 mL diambil dan dititrasi dengan KSCN 0,1078 M memerlukan 27,19 mL untuk mencapai titik akhir. Hitung %b/b Ag dalam sampel (Ar Ag=108).
6.
FILL IN THE BLANK QUESTION
2 mins • 10 pts
Sampel murni CaCO3, seberat 0,2525 gram dilarutkan dalam asam klorida dan larutan diencerkan menjadi 250,0 mL dalam suatu labu ukur. Sebuah aliquot 20,00 mL memerlukan 2,5 mL larutan EDTA untuk titrasi. Hitunglah Molaritas larutan EDTA (BM CaCO3 = 101 g/mol) (tuliskan dengan koma)
7.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
Persyaratan umum indikator metalokromik adalah sebagai berikut, kecuali:
Kompleks logam-indikator harusnya memiliki stabilitas yang baik, namun harus kurang stabil dibandingkan kompleks logam-EDTA
Reaksi warna indikator dengan logam harus spesifik
Kompleks logam-indikator harus memiliki stabilitas yang cukup, namun harus lebih stabil dibandingkan kompleks logam-EDTA
Mempunyai dua warna berbeda
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