Medium

[Co³⁺] (M) in synthetic sample

Determined [Co³⁺] (M)

$\overline{x}$

s

$\overline{x}\pm ts/\sqrt{N}$

1.0 M AcOH/AcO⁻ buffer

(pH = 4.0)

1 × 10⁻⁵

0.91 × 10⁻⁵

0.92 × 10⁻⁵

0.94 × 10⁻⁵

0.91 × 10⁻⁵

0.92 × 10⁻⁵

2.75 × 10⁻⁷

(0.92 ± 0.05) × 10⁻⁵