Compound A, a white crystalline solid with a melting point of 75C, has the solubility profile...
Compound A, a white crystalline solid with a melting point of 75C, has the solubility profile shown in the following table. Which of the solvents listed would be a good recrystallizing solvent for Compound A? Briefly explain.
Homework Answers
1) will dissolve the solute when the solution is hot, but not when the solution
is cold (H2O or methanol in this case)
2) it is very volatile - and will be easier to remove from the crystals than water
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Compound A, a white crystalline solid with a melting point of 75C, has the solubility profile...
Decide what kind of crystalline solid each element or compound in the table forms, and what kind of force holds the solid together. Then, rank the solids in order of decreasing melting point....
Decide what kind of crystalline solid each element or compound in the table forms, and what kind of force holds the solid together. Then, rank the solids in order of decreasing melting point. That Is, select "1" next to the solid with the highest melting point, "2" next to the solid w highest melting point, and so on. CYou may need to use the scrollbar to see all the choices.) type of solid force holding the solid melting point o...
A crystalline solid has a high melting point and is known to be held together with...
A crystalline solid has a high melting point and is known to be held together with covalent bonds. This solid is an example of _____. A. A network covalent solid B. An ionic solid C. A metallic solid D. A molecular solid
A student wanted to crystallize P-Toluic acid (structure and melting point shown below) and therefore obtained...
A student wanted to crystallize P-Toluic acid (structure and melting point shown below) and therefore obtained the solubility information for crystallization of this compound from literature with four solvents, A, B, C, and D presented below in the table. Solvent Boiling point (oC) Solubility in g/mL at room temperature Solubility in g/mL at bp A 220 0.13 g 43 g B 80 4.8 g 12 g C 172 0.24 g 36 g D 168 2.4 g 28 g Which solvent...
Decide what kind of crystalline solid each element or compound in the table forms, and what...
Decide what kind of crystalline solid each element or compound in the table forms, and what kind of force hoids the solid together. Then, rank the solids in order of decreasing melting point. That is, select "1, next to the solid with the highest melting point -2" next to the solid with the next highest melting point, and so on. (You may need to use the scrollbar to see all the choices.) type of solld force holding the solld melting...
Decide what kind of crystalline solid each element or compound in the table forms, and what kind of force holds the sol...
Decide what kind of crystalline solid each element or compound in the table forms, and what kind of force holds the solid together Then, rank the solids in order of decreasing melting point. That is, select "1" next to the solid with the highest melting point, "2" next to the solid with the next highest melting point, and so on. (You may need to use the scrollbar to see all the choices.) element type of solid formed force holding the...
Decide what kind of crystalline solid each element or compound in the table forms, and what kind of force holds the sol...
Decide what kind of crystalline solid each element or compound in the table forms, and what kind of force holds the solid together. Then, rank the solids in order of decreasing melting point. That is, select "1" next to the solid with the highest melting point, "2" next to the solid with the next highest melting point, and so on. (You may need to use the scrollbar to see all the choices.) element or type of solid formed force holding...
#2) You are given two similar looking white, organic crystalline solids and determine their melting points....
#2) You are given two similar looking white, organic crystalline solids and determine their melting points. You find one to be 156-158° C and the other to be 154-157° C. Explain how to determine whether the two substances are identical or different. Briefly describe how the results obtained would differ if the substances were identical or if they were different.
When performing a melting point on a solid compound, 2 melting point determinations were made. One...
When performing a melting point on a solid compound, 2 melting point determinations were made. One sample, which was 1 mm in height in the capillary, possessed a melting point of 150-151°C. The other sample was 25 mm in height. What would you expect the approximate melting point to be for this 25 mm sample, if the heating rate for both samples was 2 degrees per minute? (Hint: use algebra to solve the mp range) 4.
Spontaneity of Solid Phase Change Two crystalline phases of white phosphorus are known. Both contain P4...
Spontaneity of Solid Phase Change Two crystalline phases of white phosphorus are known. Both contain P4 molecules, but the molecules are packed together in different ways. The a phase of the solid (P4; density=1.82 g/cm2) is always obtained when molten phosphorus crystallizes below the melting point (44.1 °C). However, when cooled below -76.9 °C, the a phase spontaneously converts to the B phase (P4; density=1.88 g/cm). P4(s, a) P4(s, B) Indicate which of the following statements are true or false,...
A unknow compound was found to have an experiment melting point , MPexp, of 126.0-130.2 degree...
A unknow compound was found to have an experiment melting point , MPexp, of 126.0-130.2 degree Celsius.Assume the thermometer in the experiment was pre -calibrated to read accurate temperature.(a) .Comment on the purity of the unknow. Briefly explain. (b) . Achemist is given a list of possible identities for the solid unknown. which is the likely identity? Explain your decision. Compound melting point. A 87.5-88.5 degree Celsius B 125.5-127.0 degree Celsius C 132.5-134.5 degree celsius
Decide what kind of crystalline solid each element or compound in the table forms, and what kind of force holds the solid together. Then, rank the solids in order of decreasing melting point. That Is, select "1" next to the solid with the highest melting point, "2" next to the solid w highest melting point, and so on. CYou may need to use the scrollbar to see all the choices.) type of solid force holding the solid melting point o...
Decide what kind of crystalline solid each element or compound in the table forms, and what kind of force hoids the solid together. Then, rank the solids in order of decreasing melting point. That is, select "1, next to the solid with the highest melting point -2" next to the solid with the next highest melting point, and so on. (You may need to use the scrollbar to see all the choices.) type of solld force holding the solld melting...
Decide what kind of crystalline solid each element or compound in the table forms, and what kind of force holds the solid together Then, rank the solids in order of decreasing melting point. That is, select "1" next to the solid with the highest melting point, "2" next to the solid with the next highest melting point, and so on. (You may need to use the scrollbar to see all the choices.) element type of solid formed force holding the...
Decide what kind of crystalline solid each element or compound in the table forms, and what kind of force holds the solid together. Then, rank the solids in order of decreasing melting point. That is, select "1" next to the solid with the highest melting point, "2" next to the solid with the next highest melting point, and so on. (You may need to use the scrollbar to see all the choices.) element or type of solid formed force holding...
#2) You are given two similar looking white, organic crystalline solids and determine their melting points. You find one to be 156-158° C and the other to be 154-157° C. Explain how to determine whether the two substances are identical or different. Briefly describe how the results obtained would differ if the substances were identical or if they were different.
When performing a melting point on a solid compound, 2 melting point determinations were made. One sample, which was 1 mm in height in the capillary, possessed a melting point of 150-151°C. The other sample was 25 mm in height. What would you expect the approximate melting point to be for this 25 mm sample, if the heating rate for both samples was 2 degrees per minute? (Hint: use algebra to solve the mp range) 4.
Spontaneity of Solid Phase Change Two crystalline phases of white phosphorus are known. Both contain P4 molecules, but the molecules are packed together in different ways. The a phase of the solid (P4; density=1.82 g/cm2) is always obtained when molten phosphorus crystallizes below the melting point (44.1 °C). However, when cooled below -76.9 °C, the a phase spontaneously converts to the B phase (P4; density=1.88 g/cm). P4(s, a) P4(s, B) Indicate which of the following statements are true or false,...
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