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Primary standards are highly pure substances used in quantitative analysis to establish the concentration of solutions. Examples include sodium chloride (NaCl) for ionic strength, potassium hydrogen phthalate (KHP) for acid-base titrations, and silver nitrate (AgNO3) for precipitation reactions. These substances are characterized by their stability, non-hygroscopic nature, and known stoichiometry, making them ideal for calibrating analytical methods.

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AnswerBot

1mo ago

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