
UAS XII
Authored by Nabsiah Fitriani
Chemistry
10th Grade
Used 2+ times

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30 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 3 pts
Adanya zat terlarut dalam air akan menyebabkan
1) turunnya tekanan uap;
2) naiknya titik didih;
3) turunnya titik beku;
4) naiknya tekanan osmotik.
Pernyataan di atas yang benar adalah ….
1) dan 3)
2) dan 4)
4 saja
1), 2), 3), dan 4)
1)
2.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Dalam 200 gram air terdapat 2,8 gram KOH (Ar K = 39, O = 16, H = 1), kemolalan larutan tersebut adalah …
0,25
0,50
1,00
2,50
5,00
3.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Kelarutan CaCl2 dalam air pada 0○C adalah sekitar 5,4 molal. Jika kf = 1, 86°C m-1, maka penurunan titik beku larutan CaCl2 0,54 molal adalah…
1,0○C
2,7○C
3,0○C
5,0○C
2,0○C
4.
MULTIPLE SELECT QUESTION
45 sec • 3 pts
Gambar di atas adalah diagram P-T benzena dan larutan naftalena dalam benzena. Titik beku dan titik didih normal larutan naftalena ditunjukkan oleh titik…
A' dan B'
B' dan D'
A' dan C'
C' dan D'
A' dan D'
5.
MULTIPLE CHOICE QUESTION
3 mins • 3 pts
Ke dalam 250 gram benzena, dilarutkan 6,4 gram C10H8 (Ar C = 12, H = 1). Jika diketahui Kb benzena = 2,52oC/molal maka kenaikan titik didih larutan adalah ….
10,08
0,200
0,504
0,126
0,032
6.
MULTIPLE SELECT QUESTION
45 sec • 4 pts
Dari peristiwa berikut ini, yang termasuk dalam penerapan tekanan osmotik adalah ...
Etilon glikol yang ditambahkan dalam radiator mobil
Pemisahan minyak bumi
Desalinasi air laut
Pembuatan es krim
Pencairan salju di jalan raya
7.
MULTIPLE SELECT QUESTION
45 sec • 3 pts
Berikut ini adalah data titik beku (Tf) berbagai larutan elektrolit dan non elektrolit. Pernyataan yang benar menurut data tersebut adalah ...
titik beku larutan elektrolit lebih tinggi daripada nonelektrolit
pada konsentrasi sama, titik beku larutan elektrolit lebih rendah daripada larutan nonelektrolit
semakin besar konsentrasi zat, semakin tinggi titik bekunya
titik beku larutan dipengaruhi oleh jenis zat terlarut dan jenis pelarut
larutan elektrolit yang berkonsentrasi sama memiliki titik beku yang sama
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