
Latihan Soal US
Authored by mohammad majid
Chemistry
12th Grade
Used 7+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Molalitas larutan yang terbentuk dari 30 gram urea, CO(NH2)2 (Mr = 60) dalam 100 gram air adalah…
0,10 m
0,25 m
0,50 m
2,5 m
5,0 m
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Di bawah ini adalah sifat koligatif larutan, kecuali. . . .
penurunan tekanan uap
penurunan titik beku
kenaikan titik didih
kecepatan melarut
tekanan osmotik
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sifat koligatif larutan adalah sifat larutan yang…
memperhitungkan macam dan jumlah zat yang terlarut
memperhitungkan macam zat terlarut saja
hanya memperhitungkan jumlah mol zat yang terlarut
tidak memperhitungkan macam dan jumlah zat yang terlarut
kadang-kadang memperhitungkan jumlah mol zat terlarut, kadang-kadang tidak melihat macam zat
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Percobaan tentang penurunan titik beku larutan dari zat-zat yang dilarutkan dalam 100 gram air. diperoleh data sebagai berikut:
Berdasarkan data di atas, maka penurunan titik beku larutan ditentukan oleh…
macam zat terlarut
jenis zat terlarut
jumlah partikel dalam larutan
jumlah massa zat terlarut
jumlah massa zat terlarut
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kepekatan glukosa dalam air, di Iarutkan suhu 0°C adalah 7,5 molal. Jika tetapan penurunan titik beku molal air = 1,86; maka penurunan titik beku larutan glukosa adalah . . .
–14°C
–1,4°C
14,0°C
27,0°C
54,0°C
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ke dalam 500 gram air, dilarutkan 15 gram urea (Mr = 60). Jika Kf air = 1,86; titik beku larutan urea adalah…
–0.465°C
–0.930°C
0,465°C
0,930°C
1,86°C
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Massa etanol (Mr = 46) yang harus dilarutkan dalam 400 gram air, agar diperoleh larutan etanol yang titik bekunya –9,3°C sebanyak . . . . (Kf air = 1,86)
4,6 gram
9,2 gram
46 gram
92 gram
138 gram
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