Dzaky111
1. [H⁺] = 4 x 10⁻³ M M = 0,04 M = 4 x 10⁻² a. Ka = ..........? b. α = ..........? Penyelesaian: a. M x Ka = [H⁺]² 4 x 10⁻² x Ka = (4 x 10⁻³)² = 16 x 10⁻⁶ Ka = 4 x 10⁻⁴ b. α = [H⁺]/M = 4 x 10⁻³/4 x 10⁻² = 0,1 2. [H⁺⁺] = 6 x 10⁻³ M Ka = 1,8 x 10⁻⁵ Ka x M = [H⁺]² 1,8 x 10⁻⁵ x M = (6 x 10⁻³)² = 36 x 10⁻⁶ M = 2 Molar
M = 0,04 M = 4 x 10⁻²
a. Ka = ..........?
b. α = ..........?
Penyelesaian:
a. M x Ka = [H⁺]²
4 x 10⁻² x Ka = (4 x 10⁻³)²
= 16 x 10⁻⁶
Ka = 4 x 10⁻⁴
b. α = [H⁺]/M
= 4 x 10⁻³/4 x 10⁻²
= 0,1
2. [H⁺⁺] = 6 x 10⁻³ M
Ka = 1,8 x 10⁻⁵
Ka x M = [H⁺]²
1,8 x 10⁻⁵ x M = (6 x 10⁻³)²
= 36 x 10⁻⁶
M = 2 Molar