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Q: Why is it not necessary to dry the Erlenmeyer flask between each trial?
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A: Given : We have to explain why we measure boiling point of distilled water.
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- Separating t-butyl chloride from the reaction mixture. What is the purpose of washing with the following? . a. With cold water b. With sodium bicarbonate solutionPurification of benzoic acid 1. What is the purpose of washing the crystal in the filter paper with water? 2. How recrystallization affects the theoretical yield of sample? Explain.Why is methanol chosen as the solvent for recrystallization? What would happen if the student uses dichloromethane instead?
- In this experiment, 1.0 mL of saturated sodium chloride is used to rinse the Hickman head after the initial distillation. Why is saturated sodium chloride, rather than pure water, used for this procedure and the subsequent washing of the organic layer?What are emulsions? Why do they form during extractions? How is the formation of an emulsion minimized?Why should the purified compound at the well (Buchner funnel) not be washed with a larger amount of pure solvent?
- Explain why aqueous permanganate must be freshly standardised before use in the experiment Determination of sodium percarbonate in a commercial detergent .What is the purpose of grinding the cloves before the steam distillation? The isolation of eugenol from clovesWhy does a 70:30 hexane:acetone mixture produce a more effective separation of pigments in spinach compared to a 50:50 hexane:acetone mixture? Explain thoroughly