1-If the capillary is overload with compound it will produce: a-light increase i
ID: 975960 • Letter: 1
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1-If the capillary is overload with compound it will produce: a-light increase in the melting point b- It does not matter c- A drop in the melting point value d- A wide melting point range 2- Sometimes the melting point is higher than the literature value, meaning a- The apparatus is not calibrated properly b- There is animpurity c- The apparatus was heating too fast d- There is solvent trapped in the crystals 3- When there are impurities in a crystal a- Impurities do not affect the intermolecular interactions b- Less energy is required to break intermolecular interactions c- The energy required will depend on the solvent used d- More energy is required to break intermolecular interactions 4-The presence of impurities affect the melting point by a-Lowering and broadening its range b-It increases the range, but keeps the first drop temperature c-Increasing its value d-The melting point is not affected, just the melting temperature 5- The water layer is always at the bottom of the extraction funnel a-That's correct b-No, it depends on the solvents' polarity c- It is not correct, it is always the bottom one d- No, it depends on the solvents' density 6-Can the organic solvent be miscible with water? No, we need two phases Yes as far as the compound is not soluble in water Yes as far as it dissolve part of the compound Yes as far as it has different density 7-Has the boiling point of the organic layer any effect in the extraction process? No as far as it is not larger than the boiling point of water Yes, it does limit the solubility of the compound in water Not directly, but it can affect the following steps Yes, it does improve the extractionExplanation / Answer
Hi dear.. plenty of questions are here. I am answering some of them.
answer2. the answer should be A, B and C.
answer3. less energy is required to break the intermolecular intractions.
answer4. option a, lowering or broadening its range.
answer5. no, its depend upon the solvent density.
answer6. no,we need two phases.
answer7. not directly, but it can affect the folowwing steps.
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