
Latihan 7
Authored by Trysna Saveriana
Chemistry
1st Grade
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
Zat yang keberadaannya dapat memperlambat laju reaksi disebut ….
inhibitor
hibitor
penyangga
2.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Sebanyak 6 L C3H8 dibakar habis dengan gas oksigen.
Pada suhu dan tekanan yang sama, volume gas CO2 adalah ….
18 L
9 L
1,8 L
0,9 L
3.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Terdapat 1 L larutan penyangga yang dibentuk oleh NH4OH 0,2 M (Kb NH4OH = 1,8 x 10-5) dan NH4Cl 0,2 M, maka pH larutan penyangga tersebut adalah ….
9 + log 1,8
5 - log 1,8
9 - log 1,8
5 + log 1,8
4.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Salah satu contoh reaksi asam basa yang dipakai Gilbert N. Lewis untuk menerangkan teorinya berkaitan dengan sifat asam basa adalah reaksi antara boron triflorida dan amonia. Menurut Lewis, zat yang berperan sebagai basa adalah….
Amonia
magnesium hidroksida
litium hidroksida
5.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Jika Kelvin mencampurkan 200 mL larutan NaCl 0.2 M dan 250 mL larutan NaCl 0.6 M, maka kemolaran NaCl setelah dicampurkan adalah ….
0.42 M
4,2 M
42 M
6.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Jika terdapat suatu zat yang mengalami reaksi reduksi dan juga oksidasi, maka reaksi yang terjadi pada zat tersebut adalah ….
reaksi autoredoks
reaksi konproporsinasi
reaksi redoks
7.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Konfigurasi elektron ion X2+ yang memiliki nomor massa 45 dan neutron 24 adalah ....
1s2 2s2 2p6 3s2 3p6 4s2 atau [Ar] 4s2
1s2 2s2 2p6 3s2 3p6 4s1 atau [Ar] 4s1
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