
Uprak Gravimetri D1 Perpamsi
Quiz
•
Chemistry
•
University
•
Practice Problem
•
Medium
Isna Nurhidayati
Used 3+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
APD yang harus digunakan pada saat mengambil cawan dalam tanur adalah...
Sarung tangan kain
Sarung tangan asbes
Masker
Sarung tangan karet
2.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
0,7%
7%
17%
70%
3.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Hal yang perlu diperhatikan pada saat menimbang adalah . . . .
Memperhatikan posisi waterpass
Neraca dijauhkan dari hembusan angin atau panas berlebih
Pintu neraca selalu tertutup sebelum, saat dan sesudah digunakan
semua benar semua
4.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Posisi tangan pada saat memipet sampel menggunakan pipet volum tidak boleh berada di bawah tanda tera, karena . . . .
Dapat mempengaruhi volume sampel
Lemak di tangan menempel pada pipet volum
Berpotensi mengakibatkan pipet pecah
Menyebabkan kesalahan paralaks
5.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Silika gel yang masih berfungsi dengan baik di dalam desikator memiliki warna . . . .
merah
biru
merah muda
hijau
6.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Penambahan asam nitrat pekat dilakukan di ruang asam karena . . . .
Uap nya berbahaya bila terhirup
Memiliki aroma yang menyengat
Agar reaksinya sempurna
Mempercepat oksidasi
7.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Hal yang harus dihindari pada saat penetapan Fe secara gravimetri adalah . . . .
Menambahkan NH4OH sampai terbentuk endapan sempurna
Mencuci endapan yang dihasilkan dengan NH4NO3 sampai bebas sulfat
Proses aging dilakukan hingga mendidih
Proses penambahan pereaksi yang pekat dilakukan di ruang asam
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