
asam basa LES
Authored by Christin Pakpahan
Chemistry
11th Grade
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53 questions
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1.
MULTIPLE SELECT QUESTION
15 mins • 4 pts
Perhatikan persamaan reaksi berikut.
1) NH3(g) + H+ (aq) → NH4+ (aq)
2) H2CO3 (aq) → 2H+ (aq) + CO32-(aq)
3) HCl (l) + H2O (l) → H3O+ (aq) + Cl-(aq)
4) HClO4 (l) + NH3 (l) → NH4+ (aq) + ClO4-(aq)
Persamaan reaksi yang sesuai dengan konsep asam basa Bronsted -Lowry adalah .... (pilihan jawaban lebih dari 1)
NH3(g) + H+ (aq) → NH4+ (aq)
H2CO3 (aq) → 2H+ (aq) + CO32-(aq)
HCl (l) + H2O (l) → H3O+ (aq) + Cl-(aq)
HClO4 (l) + NH3 (l) → NH4+ (aq) + ClO4-(aq)
2.
MULTIPLE CHOICE QUESTION
15 mins • 4 pts
pH larutan asam sulfat 0,001 M adalah . . . . (log 2 = 0,3)
2
2,3
2,5
2,7
3
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Berikut adalah perubahan warna lakmus dalam lima larutan.
Berdasarkan tabel di atas, larutan yang bersifat basa adalah ….
P dan Q
P dan T
Q dan R
Q dan S
4.
MULTIPLE CHOICE QUESTION
15 mins • 10 pts
Beberapa siswa melakukan percobaan untuk menemukan bahan yang akan digunakan sebagai indikator alami. Hasil pengujian sifat asam basa suatu larutan menggunakan beberapa bahan alami yang ada di sekitar lingkungan dituliskan dalam tabel berikut. Bahan apa yang dapat dijadikan sebagai indikator alami ?
tomat dan daun pandan
kembang sepatu dan tomat
kol ungu dan kembang sepatu
daun pandan dan kembang sepatu
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Sebanyak 0,2 gram NaOH (Mr = 40) dilarutkan dalam air sampai 500 ml. Maka pH larutan tersebut adalah...
10
11
12
9
8
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Larutan H2SO4 0,05 M jika diuji dengan indikator universal akan menunjukkan warna pada pH....
1
2
3
4
5
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
pH dari HCl = 0,4 M adalah ( log 4 = 0,6)
1
0,4
0,6
4,6
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