Uji Coba
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
nunik indraswari
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7 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Disajikan data hasil pengamatan dari percobaan berikut ini. (Massa molar gula = 342 g/mol dan urea=60 g/mol, kb air =0,52 oC/m)
Pernyataan yang tepat mengenai hubungan zat terlarut dan kenaikan titik didih larutan berdasarkan data percobaan adalah....
A. Perbedaan titik didih larutan A < larutan D B. Perbedaan titik didih larutan A >larutan C
C. Perbedaan titik didih larutan D< larutan B
D. Perbedaan titik didih B > larutan D
E. Perbedaan titik didih C = larutan A
Kenaikan titik didih larutan A < larutan D
Kenaikan titik didih larutan A > larutan C
Kenaikan titik didih larutan D < larutan B
Kenaikan titik didih B > larutan C
Kenaikan titik didih C = larutan A
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan gambar partikel berikut
Berdasarkan ilustrasi partikel zat pada tabung A, B dan C, pernyataan yang tepat tentang sifat koligatif larutan adalah....
Titik didih pada A, B dan C adalah sama
Titik didih A, B, dan C dipengaruhi jenis zat yang ditambahkan
Titik didih C paling rendah daripada titik didih A dan B
Titik didih A paling rendah daripada titik didih C dan B
Titik didih B lebih rendah daripada titik didih C
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebanyak 6 gram urea, CO(NH2)2 dilarutkan ke dalam 40 gram air. Jika larutan tersebut kita anggap ideal, tentukan berapa titik didih larutan. Diketahui Kb air = 0,512 oC kg mol-1, dan Mr urea 60 g/mol.
102,75 oC
97,25 oC
101,28 oC
97,94 oC
124,77 oC
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Natrium hidroksida 4 gram dilarutkan dalam 500 gram air. Hitung kenaikan titik didih larutan tersebut! (Kb air = 0,52 °Cm-1, Mr NaOH = 40 gr/mol)
0,94 oC
0,104 oC
1,27 oC
0,52 oC
1,42 oC
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Peristiwa mendidih akan terjadi jika . . . . .
Tekanan uap zat cair lebih kecil dari tekanan uap lingkungan sekitar
Tekanan uap zat cair lebih besar dari tekanan uap lingkungan sekitar
Tekanan uap zat cair sama dengan tekanan uap lingkungan sekitar
Tidak ada jawaban yang tepat
Jawaban benar semua
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Titik didih normal air adalah 100 oC yaitu berada pada tekanan ............
680 mmHg
610 mmHg
780 mmHg
760 mmHg
1000 mmHg
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Jika iodin dilarutkan dalam benzena mempunyai titik didih 82,63. sedangkan titik didih benzena adalah 80,1 oC. Kenaikan titik didih larutan iosin adalah sebesar . . . .
2,53 oC
1,67 oC
2,62 oC
2,63 oC
1,93 oC
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