khosteep81
26. 1. 4s³ = 2,7x10⁻¹¹, s = 1,9 x10⁻⁴ M 2. s²= 1,2 x10⁻¹⁰, s = 1,1 x10⁻⁵ M 3. s²= 2x10⁻⁹, s = 4,5 x10⁻⁵ M 4. 4s³ = 4x10⁻¹² , s = 1x10⁻⁴ M 5. s² = 2,5 x10⁻¹³ , s = 5x10⁻⁷ M jawabannya (E)
27. s = 45/225 x 1/500 = 4x10⁻⁴ Ksp BaC2O4 = s² Ksp BaC2O4 = (4x10⁻⁴)² = 1,6x10⁻⁷, jawabannya (C)
28. Ksp Ag2CO3 = 4s³ 4s³ = 4x10⁻¹², s = 10⁻⁴ mol/liter massa Ag2CO3 = 10⁻⁴ mol x 276 = 0,0276 gr = 27,6 gr jawabannya (D)
2. s²= 1,2 x10⁻¹⁰, s = 1,1 x10⁻⁵ M
3. s²= 2x10⁻⁹, s = 4,5 x10⁻⁵ M
4. 4s³ = 4x10⁻¹² , s = 1x10⁻⁴ M
5. s² = 2,5 x10⁻¹³ , s = 5x10⁻⁷ M
jawabannya (E)
27. s = 45/225 x 1/500 = 4x10⁻⁴
Ksp BaC2O4 = s²
Ksp BaC2O4 = (4x10⁻⁴)² = 1,6x10⁻⁷, jawabannya (C)
28. Ksp Ag2CO3 = 4s³
4s³ = 4x10⁻¹²,
s = 10⁻⁴ mol/liter
massa Ag2CO3 = 10⁻⁴ mol x 276 = 0,0276 gr = 27,6 gr jawabannya (D)
29.s PbCl2 = 1,6x10⁻⁵ / (2x0,2)² = 1x10⁻⁴, jawabannya (E)
30. Ksp L(OH)2 = 4s³
s = ∛3,2x10⁻⁸/4 = 2x10⁻³
[OH-] = 2s = 4x10⁻³
pOH = - log 4 x10⁻³
pOH = 3 - log 4
pH = 14 - (3 - log 4) = 11 + log 4 jawabannya (D)