Larutan Penyangga (Buffer)
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
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16 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pernyataan berikut benar tentang larutan penyangga, kecuali...
Memiliki pH yang konstan
pH-nya tidak dipengaruhi oleh pengenceran
pH-nya tidak dipengaruhi kadar CO2 di udara
Dapat dibuat dengan campuran asam lemah dengan basa
pH-nya selalu sama dengan pKa dan pKb
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Larutan buffer dapat mempertahankan pH karena...
Pasangan asam-basa konjugasinya cukup stabil terhadap ion Hidrogen (H+) dan ion hidroksida (OH-)
Pasangan asam-basa konjugasinya dapat menangkap ion Hidrogen (H+) dan ion hidroksida (OH-)
Pasangan asam-basa konjugasinya tidak cukup relatif dengan adanya ion Hidrogen (H+) dan ion hidroksida (OH-)
Mempunyai kekuatan asam/basa yang kuat l, sehingga tidak terpengaruh dengan adanya ion hidrogen (H+) atau ion hidroksida (OH-) dari luar
Komponen asam lemah/basa lemah dapat mengusir ion hidrogen (H+) atau ion hidroksida (OH-)
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Peranan larutan buffer dalam tubuh makhluk hidup, antara lain ...
Mempertahankan pH tubuh agar selalu tetap
Menjaga agar denyut jantung tetap stabil
Menjaga agar tekanan darah tetap stabil
Mengatur kadar gula dalam darah
Mempertahankan suhu tubuh
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Penambahan sedikit air dalam larutan penyangga akan menyebabkan ...
Perubahan pH larutan
Perubahan pKa larutan
Perubahan pKa, tapi pH tetap
Perubahan pH, pKa tetap
Tidak ada perubahan pH maupun pKa
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Larutan penyangga dapat dibuat dengan pencampuran berikut, kecuali ….
basa lemah dan garamnya
basa lemah dan garamnya
garam asam lemah berlebih dan asam kuat
asam lemah dan basa lemah
basa lemah dan asam konjugasinya
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Campuran di bawah ini merupakan komponen larutan penyangga, kecuali ….
A
B
C
D
E
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan tabel dan data berikut.
I dan II
II dan III
II dan IV
IV dan V
I dan IV
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