滴定计算器
计算酸碱滴定中的等价点和所需试剂量。
Concentration of Analyte
0.0500 M
Concentration of Analyte vs Concentration of Titrant
公式
## How Titration Calculations Work ### Formula **C_a = (C_t × V_t × n_a) / (V_a × n_t)** Where: - **C_a** = concentration of analyte - **C_t** = concentration of titrant - **V_t** = volume of titrant at equivalence point - **V_a** = volume of analyte - **n_a, n_t** = stoichiometric coefficients At the equivalence point, moles of titrant and analyte are in stoichiometric ratio.
计算示例
50 mL of unknown HCl is titrated with 0.1 M NaOH; 25 mL NaOH is used to reach equivalence.
- 01C_a = (C_t × V_t × n_a) / (V_a × n_t)
- 02C_a = (0.1 × 25 × 1) / (50 × 1)
- 03C_a = 2.5 / 50
- 04C_a = 0.05 M
常见问题
What is a titration?
A titration is a technique where a solution of known concentration (titrant) is added to a solution of unknown concentration (analyte) until the reaction reaches the equivalence point.
What is the equivalence point?
The equivalence point is when the moles of titrant exactly react with the moles of analyte in stoichiometric proportion.
What indicators are used?
Common indicators include phenolphthalein (colorless to pink, pH 8-10) and methyl orange (red to yellow, pH 3-4). The choice depends on the expected pH at the equivalence point.
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