
Klasifikasi Asam Basa
Presentation
•
Chemistry
•
11th Grade
•
Easy
Zahara Mardewati
Used 6+ times
FREE Resource
10 Slides • 6 Questions
1
Klasifikasi Asam Basa
By Zahara Mardewati
2
Asam / Basa Lemah
Dalam air melepas ion H+ / OH- dengan mudah.
Mengalami disosiasi total dalam larutan
Bila direaksikan ( Asam + Basa ) sifat larutan akan menjadi netral
Asam / Basa Kuat
Meliputi
Dalam air sulit ion H+ / OH- dengan mudah.
Mengalami disosiasi sebagian
Bila direaksikan ( Asam + Basa ) sifat larutan tergantung harga Ka / Kb
3
Open Ended
Kita akan lanjutkan slide ini setelah kalian bertanya , terkait slide sebelumnya. silahkan ketik pertanyaan kalian ya..
4
Contoh Asam Kuat dan Lemah
5
Contoh Basa Kuat dan Lemah
6
Categorize
HCl
HNO3
Kelompokkan sesuai dengan kategorinya masing-masing
7
DERAJAT KEASAMAM / PH
PH ASAM
ASAM KUAT
[ H+ ] = Valensi x [ asam ]
ASAM LEMAH
[ H+ ] = 𝑲𝒂 𝒙 [ 𝒂𝒔𝒂𝒎]
pH = - log [ H +]
[ H+ ] = 𝛂 𝒙 [𝑨𝒔𝒂𝒎 ]
𝛂 = derajat ionisasi
Ka = tetapan kesetimbangan asam
8
DERAJAT KEASAMAM / PH
PH BASA
BASA KUAT
[ OH- ] = Valensi x [ basa]
BASA BASA
[ OH- ] = 𝑲𝒃 𝒙 [ 𝒃𝒂𝒔𝒂]
pOH = - log [ OH- ]
[ OH- ] = 𝛂 𝒙 [basa]
𝛂 = derajai ionisasi
Kb = tetapan kesetimbangan basa
pH = 14 - pOH
9
CONTOH SOAL
Tentukan derajat keasaman(pH) HCl 0,01 M
HCl → H++ Cl-
HCl merupakan asam kuat dengan valensi = 1
[ H +] = valensi x [asam]
= 1 x 0,01
= 0,01
= 10 -2
pH = - log 10 -2
= 2
10
CONTOH SOAL
Tentukan derajat keasaman(pH) HF 0,1 M , Ka HF = 10 -5
HF → H++ F-
HF merupakan asam Lemah
[ H+] = 𝑲𝒂 𝒙 [ 𝒂𝒔𝒂𝒎]
= 10
−5 x 0,1
= 10
−6
= 10 -3
pH= - log 10 -3
= 3
11
CONTOH SOAL
Tentukan derajat keasaman(pH) NaOH 0,01
M
NaOH → Na++ OH-
NaOH merupakan basa kuat dengan valensi = 1
[ OH- ] = valensi x [basa]
= 1 x 0,01
= 0,01
= 10 -2
pOH = - log 10 -2
pH = 14 - pOH
= 2
= 14 - 2
= 12
12
CONTOH SOAL
Tentukan derajat keasaman(pH) NH3 0,4 M, Kb = 10
-5
NH3 merupakan basa lemah
[ OH- ] = 𝑲𝒃 𝒙 [ 𝒃𝒂𝒔𝒂]
= 10
−5 x 0,4
= 10
−5 x 4. 10
−1
=
4. 10
−6
= 2 . 10 -3
pOH = - log 2 . 10 -3
pH = 14 - pOH
=3 – log 2
= 14 – (3 – log 2 )
= 11 + log 2
13
Fill in the Blanks
Type answer...
14
Fill in the Blanks
Type answer...
15
Multiple Choice
Di antara asam berikut yang merupakan asam terkuat adalah ....
HCN (Ka = 7,2 x 10-10)
HSO4- (Ka = 1,2 x 10-2)
HSO3- (Ka = 6,2 x 10-6)
NH4+ (Ka = 5,8 x 10-10)
HF (Ka = 7,2 x 10-4)
16
Multiple Choice
Larutan Asam asetat CH3COOH 0,01 M (Ka = 1,8 x 10-5 ) besarnya kosentrasi ion H+ larutan tersebut adalah……
8 x 10-7
4,2 x 10-4
4,2 x 10-6
2,4 x 10-4
2,4 x 10-6
Klasifikasi Asam Basa
By Zahara Mardewati
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