LARUTAN PENYANGGA
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Medium
Maria Yekiana Mulyahati
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11 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Di antara campuran berikut, yang dapat membentuk larutan penyangga adalah ....
HCl dan NH4OH
KOH dan KCl
NH4OH dan NH4Cl
HBr dan NaBr
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pernyataan tentang larutan penyangga yang paling tepat adalah ....
pH larutan penyangga tidak mungkin berubah oleh penambahan asam dan basa
Larutan penyangga dapat dibuat dari campuran garam dengan basa kuat berlebihan
Larutan penyangga dapat dibuat dari campuran garam dengan asam kuat berlebihan
Larutan penyangga dapat dibuat dari campuran larutan asam lemah dengan basa konjugasinya
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Ke dalam 90 mL larutan NH4OH 0,1 M (Kb NH4OH = 10-5) dicampurkan 15 mL larutan H2SO4 0,1 M. pH larutan yang terjadi adalah ....
5 - log 2
5 - log 4
9 + log 2
9 + log 4
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sebanyak 0,3 mol CH3COOH (Ka = 10-5) dicampurkan dengan 0,15 mol CH3COOK hingga volume 1 liter. pH larutan yang dihasilkan adalah ....
5 + log 2
5 - log 2
9 + log 2
9 - log 2
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Massa CH3COOK (Mr = 98) yang harus ditambahkan ke dalam 200 mL larutan CH3COOH 0,2 M agar diperoleh larutan penyangga dengan pH = 5. (Ka CH3COOH = 10-5)
3,92 g
39,2 g
2,45 g
24,5 g
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Di antara larutan berikut yang nilai pH-nya relatif tetap jika diencerkan atau ditambah sedikit asam atau basa adalah ....
NH3 dan NH4Br
NaOH dan HNO3
NH4OH dan NaOH
NaCl dan HCl
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Untuk mengubah 110 mL larutan CH3COOH 0,1 M yang pH nya 3 agar menjadi 6 diperlukan larutan NaOH 0,1 M sebanyak ....
10 mL
55 mL
100 mL
1100 mL
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