Which of the following is a common error in titration that leads to an overestimation of the analyte concentration?
Correct answer: A. Rinsing the burette with distilled water instead of the titrant
- A. Rinsing the burette with distilled water instead of the titrant
- B. Reading the burette at the top of the meniscus
- C. Adding too much indicator
- D. Using a dry conical flask
Explanation
Rinsing with water dilutes the titrant, requiring more volume to reach the endpoint, thus overestimating the analyte concentration.
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Separation methods are selected according to differences in solubility, particle size, volatility and sublimation behaviour. Filtration and crystallisation separate insoluble or dissolved solids, sublimation isolates suitable volatile solids, distillation separates liquids by boiling point, and solvent extraction transfers a substance between immiscible solvents.
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