Pretest Volumetri - Konsentrasi NaOH

Quiz
•
Chemistry
•
10th Grade
•
Medium
Iva Zaki
Used 7+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Zat NaOH termasuk zat baku ....
Primer
Sekunder
2.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
Melarutkan NaOH yang benar adalah ....
(Jawaban lebih dari satu)
Menimbang dengan segera karena bersifat higroskopis
Dilarutkan dengan akuades sesegera mungkin untuk mencegah korosi
Menggunakan air bebas CO2 yang didihkan terlebih dahulu
Mencampurkan dengan asam oksalat supaya reaksi netral
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Budi seorang analis ingin membuat larutan NaOH 0,1 N sebanyak 500mL. Massa NaOH yang ditimbang oleh Budi adalah .... gram
(Mr NaOH=40)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Larutan NaOH disimpan dalam reagen ....
Kaca
Plastik
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Asam oksalat termasuk zat baku ....
Primer
Sekunder
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada saat penentuan konsentrasi NaOH dengan asam oksalat menggunakan indikator ....
Metil merah
Phenol merah
Metil jingga
Phenolpthalein
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Saat titrasi penentuan konsentrasi NaOH perlu menggunakan air bebas CO2 karena ....
Untuk mencegah zat pengotor agar hasil perhitungan sesuai secara kantitatif
Mencegah terbentuknya ion karbonat yang akan mengganggu titik akhir
CO2 tidak dibutuhkan karena akan mengganggu warna titik akhir
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