
ASESMEN SUMATIF AKHIR TAHUN
Quiz
•
Chemistry
•
11th Grade
•
Easy
Syafrizal Syafrizal
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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Seorang siswa melakukan titrasi asam basa untuk menentukan konsentrasi larutan asam sulfat (H2SO4). Dia menggunakan larutan natrium hidroksida (NaOH) sebagai larutan titran. Jika ia menambahkan 25 mL larutan NaOH 0.1 M untuk mencapai titik akhir titrasi pada 20 mL larutan H2SO4, apa konsentrasi sebenarnya dari larutan H2SO4?
0.06 M
0,10
0,15
0,20
0,25
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Seorang ahli kimia menyiapkan larutan asam asetat (CH3COOH) 0.1 M. Asam asetat ini merupakan asam lemah dengan konstanta disosiasi ion (Ka) sebesar 1,0 x 10-5. Berapakah pH larutan asam asetat yang telah disiapkan?
1
2
3
4
5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Seorang siswa mencampur 100 mL larutan CH3COOH 0,2 M dengan 100 mL larutan NaOH 0,2 M. Jika Ka CH3COOH = 5 x 10-5, maka pH dari campuran tersebut adalah ....
2
4
5
6
9
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Seorang siswa memasukan natrium asetat padat (Mr=72) ke dalam 100 ml larutan asam asetat 1M, kemudian diukur pHnya diperoleh pH campuran tersebut sama dengan 6. Banyak natrium asetat padat yang dimasukan kedalam larutan asam asetat adalah….(Ka=10-5)
144 g
72,0
7,2
3,6
0,72
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebanyak 200 mL larutan AgNO3 0,02 M, masing-masing dimasukkan ke dalam 5 wadah yang berisi 5 jenis larutan yang mengandung ion S2-, PO43-, CrO42-, Br- dan SO42- dengan volume dan molaritas yang sama. Jika harga Ksp Ag2S = 2 x 10-49; Ag3PO4 =1 x 10-20; Ag2CrO4=6 x 10-5; AgBr = 5 x 10-13; Ag2SO4 = 3 x 10-5.
Ag2S dan Ag3PO4
Ag2S dan AgBr
Ag2CrO4 dan Ag2SO4
Ag3PO4 dan AgBr
AgBr dan Ag2SO4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika konsentrasi Ca2+ dalam larutan jenuh CaF2 = 2 x 10-4 mol L-1, maka hasil kali kelarutan CaF2 adalah...
8 x 10-8
3,2 x 10-11
1,6 x 10-11
2 x 10-12
4 x 10-12
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada suhu tertentu 0,350 g BaF2 (Mr = 175) melarut dalam air murni membentuk 1 liter larutan jenuh. Hasil kali kelarutan BaF2 pada suhu itu adalah...
1,7 x 10-2
3,2 x 10-6
3,2 x 10-8
3,2 x 10-9
4,0 x 10-9
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