
Kimia Dasar 1A
Authored by bimbel smartprivat
Chemistry, Science
University
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20 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
X, Y, dan Z adalah unsur-unsur dalam periode yang sama dalam sistem periodik unsur. Oksida X bersifat amfoter, oksida Y bersifat basa, dan oksida Z bersifat asam. Urutan kenaikan nomor atom unsur-unsur tersebut adalah ...
XYZ
XZY
YXZ
YZX
ZXY
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Perubahan energi yang menyertai reaksi berikut adalah
(s) (g) + e-
Perubahan entalpi vaporasi kalium
Energi ionisasi pertama kalium
Jumlah perubahan entalpi atomisasi dan energi afinitas elektron kalium
Jumlah perubahan entalpi atomisasi dan energi ionisasi pertama kalium
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Senyawa magnesium nitrida digunakan sebagai katalis pada sintesis organik golongan amida. Rumus kimia magnesium nitrida adalah …
MgN
Mg2N3
Mg3N
MgN2
Mg3N2
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Massa atom relatif boron adalah 10,8 yang terdiri atas isotop 10B dan 11B. Persentase atom 11B dalam campuran isotop ini adalah…
0,8%
8,0%
20%
80%
92%
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Pasangan ion di bawah ini yang bersifat paramagnetik adalah….
Na+ dan Al3+
O2− dan Cl−
Li+ dan Mg2+
Cr3+ dan Fe3+
N3− dan S2−
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Berdasarkan konfigurasi elektron pada tabel berikut, unsur yang berwujud gas pada T ruang adalah
E dan L
J dan G
G dan H
J dan L
E dan H
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Persen massa C, H, dan O dalam suatu senyawa berturut-turut 57,48; 4,22; dan 38,3%. Rumus empiris senyawa ini adalah ...
C2H2O
C4H3O2
C5H4O2
C8H7O4
C9H6O3
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