perhitungan asam basa
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Medium
noor azizah
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Larutan asam lemah NH4OH 0,1 M,dan Kb = 10-5 , nilai pH larutan tersebut adalah… . .
11
3
9
14
6
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebanyak 3,4 gram Ba(OH)2 (Ar: Ba = 136, O = 16, H = 1) dilarutkan dalam 250 mL larutan, maka harga pOH larutan tersebut adalah ….
13 + log 1,6
12 + log 8
2 - log 16
2 log 8
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dari trayek pH perubahan warna beberapa indicator sebagai berikut:
Indikator Warna Trayek pH Bromtimol Biru
Kuning-Biru 6,0 – 7,6
Metil Merah
Merah-Kuning 4,4 – 6,2
Fenolftalein
Tidak berwarna-Merah 8,3 – 10,0
Suatu larutan diuji dengan beberapa indikator tersebut dan menghasilkan pH 4,4<pH 6,0. Warna yang terjadi pada indicator tersebut adalah…
a. Metil Merah = merah
b. Metil Merah = Jingga
c. Bromtimol Biru = Biru
d. Bromtimol Biru = Hijau
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
derajat keasaman larutan yang mengandung ion OH- sebanyak 1.10-4 M adalah ....
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dari hasil pengujian air limbah suatu industri makanan, diperoleh data bahwa air limbah menjadi berwarna kuning setelah ditetesi indikator metil merah, berwarna kuning setelah ditetesi BKH dan berwarna kuning setelah ditetesi BTB. Dapat disimpulkan bahwa pH air limbah tersebut adalah…
pH ≥ 7,6
pH ≤ 6,0
pH ≤ 3,1
5,4 ≤ pH ≤ 7,6
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
pH kedua larutan sama sebesar 3
kedua larutan dapat membirukan lakmus merah
kedua larutan bersifat basa
kedua larutan sama sama asam kuat
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
pernyataan yang benar sebagai berikut
sifat keasaman HK lebih besar dari HL
sifat keasaman HL lebih besar dari HM
sifat keasaman HM lebih besar dari HK
sifat keasaman HL lebih besar dari HK
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