【Daily Question】Chemical Analysis Edition 2021.12.26
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The option that helps to reduce the impurities that cause adsorption and retention, thereby resulting in a purer crystalline precipitate, is A: The temperature during precipitation should be slightly higher. B: Precipitation should take place in a more concentrated solution. C: An appropriate amount of electrolyte should be added during precipitation. D: Allow the precipitate to age for a certain period of time after it has fully precipitated. D
D. Allow aging for a certain period of time after complete precipitation