
chemistry test UTBK19
Authored by Fauzy Yanka
Chemistry
12th Grade
Used 101+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pernyataan yang benar tentang grafik diatas adalah
A + B bisa langsung membentuk P
A + B membentuk P melalui dua kompleks teraktifkan yaitu AB* dan C*
Reaksi A + B membentuk P melepaskan energi sebesar (E – F)
Reaksi A + B membentuk P melepas energi sebesar (F – D)
Reaksi A + B membentuk C adalah reaksi eksoterm
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebanyak 20 ml larutan KMnO4 0,2 M tepat bereaksi dengan 80 ml larutan H2C2O4 sesuai persamaan kimia
2MnO4– + 5C2O42- + 16H+ → Mn2+ + 10CO2 + 8H2O
Volume gas CO2 yang dihasilkan diukur pada 0 C dan 76 cmHg adalah
0,112 L
0,224 L
0,336 L
0,448 L
0,560 L
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Per butir = 0,1 mmol
pKa = 4
kondisi awal
Berdasarkan ilustrasi molekular di atas, apabila spesi-spesi tersebut dibiarkan bereaksi, ilustrasi molekular yang membentuk larutan penyangga adalah
a
b
c
a dan b
a dan c
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Manakah unsur-unsur yang jika berpasangan membentuk senyawa bersifat paling basa ?
M dan N
M dan O
N dan O
N dan P
P dan Q
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Reaksi yang tidak dapat menghasilkan asam asetat adalah
oksidasi asetaldehida
oksidasi etanol
hidrolisis asetilamina
hidrolisis etil asetat
oksidasi isopropanol
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
sebanyak 50 ml larutan SO2 dititrasi dengan larutan KBrO4 0,1 M menurut reaksi :
KBrO4 + 4SO2 + 4H2O —> 4 H2SO4 + KBr
Titik ekivalen tercapai saat volume KBrO4 yang digunakan sebanyak 50 ml.
Konsentrasi SO2 dalam larutan adalah
0,1 M
0,2 M
0,3 M
0,4 M
0,5 M
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebanyak 50 ml larutan SO2 dititrasi dengan larutan KBrO4 0,1 M menurut reaksi :
KBrO4 + 4SO2 + 4H2O —> 4 H2SO4 + KBr
Titik ekivalen tercapai saat volume KBrO4 yang digunakan sebanyak 50 ml.
Jumlah mol elektron yang terlibat dalam reaksi diatas adalah
0,02 M
0,04 M
0,08 M
0,10 M
0,12 M
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