Page 119 - Pengembangan E-Modul Berbasis STEAM Pada Materi Asam Basa_Nur Sirril Hayat

0,01 × 74 m = 0,074 gram
=
10

Jawaban : A

4. Dik : Jawab:

M = 0,1 M [H ] = a . M
+
→ + = 1 . 0,1
+
−
a = 1 = 0,1 = 10 -1

Dit : pH = - log [H ]
+
Massa? = - log 10 -1

= 1

Jawaban : B

5. Dik :

pH = 3-log 2

Dit :

[H ]?
+
Jawab :
pH = 3 – log 2

= - log 2 x 10
-3
[H ] = 2 x 10 -3
+
Jawaban : C

6. Dik : = √10 . 10
−1
−7
M = 0,1 M = √10
−8
Ka = 10 = 10
-7
-4
Dit : pH = - log [H ]
+
Massa? = - log 10
-4
Jawab: = 4

[H ] = √ .
+

Jawaban : E

E-MODUL ASAM BASA BERBASIS STEAM 107