Q: what would be the implications if the volume reduction is skipped in the recrystallization
A: Recrystallization is a purification technique often employed in the labs. it is based on the…
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Q: Please help me this question, thank you! "Why is using a drying agent a necessary step?"
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Q: What is the general equations of : Chromic Acid Test Reaction of Acid with ROH Lucas Test…
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Q: On recrystallization, if the volume reduction step was skipped, what would be the implications?
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Q: Which analyte gives a positive result for the Molisch Test?
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Q: what happens if i heat a pinch of benzoic acid in a clean, dry test tube for two minutes
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Q: effective
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Q: What is the active ion in Schiff’s reagent and Potassium permanganate?
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Q: How can we use a known reaction to preform a presumption test
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Q: why do you have to stir when adding sodium nitrite to a solution when forming a diazonium salt?
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Q: What is the purpose of chromic acid test? What is the evidence of positive result?
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Q: Why wouldn't you expect to see the purple color upon testing pure acid?
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Q: Why should the sodium carbonate be dried prior to standardization? Answer briefly and own words
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Q: what happens when caustic lunar is treated with aqueous chloride?
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Q: What is the purpose of using bleach in the iodoform test? Please Explain.
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Q: Why must the spots be above the level of the development solvent in the developing chamber?
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Q: What may be the complications in doing nitrous acid test and how will it be resolved?
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Q: Explain which hydrolyzed component will be positive in the Br2 water test. (Refer to image)
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Q: Why does zinc hydroxide dissolved in excess sodium hydroxide?
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Why is concentrated hydrochloric acid used in the flame test and not any other concentrated acid?
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- What is the purpose of chromic acid test? What is the evidence of positive result?during aspirin synthesis\ why do we add phosphoric acid, and heat reaction mixture reason for adding ice-cold water into the reaction mixture after cooling reason for using ferric chloride test why do we need to determine melting pointHow can Separate Sodium Hydroxide and Sodium Carbonate in the Assay Experiment ?
- Explain which hydrolyzed component will be positive in the Br2 water test. (Refer to image)What will be the residue and what will be formed at cooler portion of test tubes if the tube containing CuO-sugar mixture is heated?What is the general equations of :Chromic Acid Test Reaction of Acid with ROHLucas Test Iodoform Test
- Why do you need to add boiling chips to the experiment? A. It decreases the boiling time B. It acts as a neutralizing agent to keep the pH at 7 C. It provides more surface area for a faster reaction D. It helps increase the pH to prevent having an acidic solution3. Why is necessary to work in the hood when using acetic anhydride?Why must the spots be above the level of the development solvent in the developing chamber?
- What is the Victor-Meyer test? Describe how it is performed including reagents and describe the results. Use equations if possible.Assume that charcoal and sugar are the two main impurities in the sample of benzoic acid. Explain how you could perform recrystallization using water toremove each impurity.Draw and label a detailed reflux apparatus for the reflux reaction described in your experimental procedure for the Knoevenagel Reaction. Your drawing should be complete and include all the necessary components of a proper reflux apparatus.