e-Panrita Quiz Sesi-2
Quiz
•
Chemistry
•
Professional Development
•
Practice Problem
•
Hard
Dirlan M
Used 2+ times
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Volume larutan H2SO4 0,025 M yang diperlukan untuk tepat menetralkan 525 mL larutan KOH 0,06 M adalah...
0,63 L
0,76 L
0,90 L
1,26 L
1,52 L
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jika 20 mL asam fosfat H3PO4 0,1 M dititrasi dengan larutan NaOH 0,2 M hingga berubah menjadi HPO42- maka volume NaOH yang diperlukan adalah ….
5 mL
10 mL
15 mL
20 mL
25 mL
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Untuk menentukan konsentrasi larutan HCl, larutan tersebut diambil 20 mL, lalu dititrasi dengan larutan Ba(OH)2 0,1 M. Data titrasi yang diperoleh sebagai berikut.
0,15 M
0,14 M
0,13 M
0,12 M
0,11 M
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pada penetapan kadar larutan HCl dengan larutan NaOH, sebaiknya menggunakan indikator ....
Fenolftalein (trayek pH = 8,3 – 10,0)
Timol biru (trayek pH = 1,2 – 2,8)
Alazarin kuning (trayek pH = 10,1 – 12,0)
Metil kuning (trayek pH = 2,9 – 4,0)
Metil oranye (trayek pH = 3,1 – 4,4)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suatu cuplikan natrium hidroksida sebanyak 3 gram dilarutkan dalam 100 mL air. Sebanyak 25 mL larutan tersebut tepat dinetralkan oleh larutan H2SO4 0,1 M sebanyak 50 mL. Kadar natrium hidroksida dalam cuplikan tersebut. (Ar Na = 23, O = 16, H = 1) adalah ....
8,20 %
7,33%
6,20 %
5,33 %
4,20 %
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