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2. Match the solids that will be soluble with the solvents. (some solvents can be used...
Pt.1 predict whether soluble or insoluble. Pt 2. Miscible or immiscible Pt 3 and beyond- answering...
Pt.1 predict whether soluble or insoluble.
Pt 2. Miscible or immiscible
Pt 3 and beyond- answering questions
1. For each of the following pairs of solute and solvent, predict whether the solute would be soluble or insoluble. After making your predictions, you can check your answers by looking up the compounds in The Merck Index or the CRC Handbook of Chemistry and Physics. Generally, The Merck Index is the easier reference book to use. If the substance has a solubility...
Hi can someone help me with question 2? It deals with Rf values and the collected...
Hi can someone help me with question 2? It deals with Rf values
and the collected data is given below!
Results: Rf Values Of Compounds In Solvents Solvents 100% 50% hexanes 75% hexanes 25% ethyl 100% ethyl Hexane 25% hexanes 75% ethyl acetate 50% ethyl Compounds acetate acetate acetate trans-Stilbene 0.125 0.419 0.781 0.594 0.906 9-Fluorenone 0.156 0.677 0.906 0.375 0.843 Benzoic Acid 0.094 0.742 0.813 0.656 0.937 #2.) For each of the solvents used, rank the compounds (trans-stilbene, 9-fluorenone,...
2. You found that naphthalene is more soluble in petroleum ether than water. How do you...
2. You found that naphthalene is more soluble in petroleum ether than water. How do you account for this difference in solubility? 3. Solutions of hydrochloric acid caused the light bulb to glow (or caused the conductivity meter to report a higher value), brighter than solutions of acetic acid. How do you account for the difference in behavior between these two compounds? 4. Hexane is an organic solvent that has a density of 0.6603 g/cm at 20°C. If hexane is...
Common solvents used in TLC analysis are hexane and ethyl acetate, the latter being more polar. A TLC has been performed...
Common solvents used in TLC analysis are hexane and ethyl acetate, the latter being more polar. A TLC has been performed on a mixture of two compounds. The solvent ran for 3 cm(plate length is 6cm) with 5% ethyl acetate in hexane. The two spots were not resolved, meaning they showed up too close to each other. What can you suggest to possible improve the results of the separation?
4. Based on what you know about solubility and recrystallization, which of the following solid/solvent combinations...
4. Based on what you know about solubility and recrystallization, which of the following solid/solvent combinations can be used for recrystallization? (5 pts) A. Naphthalene/ water B. Urea/hexane c. Benzoic acid/ water D. All of the above
16. Would you expect 2-octanone to be soluble in water? Would you expect butanal to be...
16. Would you expect 2-octanone to be soluble in water? Would you expect butanal to be soluble in water? Would either of them be more soluble in hexane than in water? Explain. 25. Criticize the following techniques: isten (a) Heating a mixture that contains n-hexane using an open flame. (b) For a reaction, heating a mixture that contains a large amount of toluene using hot water bath. (c) Running s reaction with tert-butyl alcohol that is cooled to 0°C in...
02) Match the waste to the appropriate container (some containers can be used more than once,...
02) Match the waste to the appropriate container (some containers can be used more than once, some not at all): (5 points) Bromobenzene Acetylsalicylic acid crystalline Acetone Unused aniline Methylene fluoride A. Non-halogenated organic waste B. Halogenated organic waste C. Broken glass box D. Sink E. Solid waste bin
Please help?!?! When ACE. ASP and CAF were analyzed by TLC using 2:9:9 mixture of t-butyl...
Please help?!?!
When ACE. ASP and CAF were analyzed by TLC using 2:9:9 mixture of t-butyl alcohol. 4-methyl-2-pentanone and ethyl acetate respectively the following R_f values were obtained: ACE (0.51), ASP (0.15) and CAF (0.35). These results are not the same ones obtained when using 2percentage acetic acid and 98percentage ethyl acetate as the mobile phase? Explain why were the results different for our case (TLC shown) particularly for caffeine. Give the R_f values you obtained in lab for the...
Of the slightly soluble solids BaF2, CaCO3, and Mg(OH)2, which will be more soluble in 1...
Of the slightly soluble solids BaF2, CaCO3, and Mg(OH)2, which will be more soluble in 1 M H30+ than in water? A. Only CaCO3 B. Only Mg(OH)2 C. Only BaF2 D. CaCO3 and BaF2 E. All three
Acid/Base Extraction Liquid-liquid extraction is a technique that can be used to physically separate two substancesthat...
Acid/Base Extraction Liquid-liquid extraction is a technique that can be used to physically separate two substancesthat have varying solubility properties. Typically an aqueous solution can be extracted with anorganic solvent to isolate a compound or vice-versa. The specialized piece of glassware that isemployed for these types of separations is called a separatory funnel.In this experiment a mixture of benzoic acid and naphthalene will be purified using liquid-liquidextraction, more specifically an acid-base extraction. Since both compounds are soluble inethyl acetate (an...
Pt.1 predict whether soluble or insoluble.
Pt 2. Miscible or immiscible
Pt 3 and beyond- answering questions
1. For each of the following pairs of solute and solvent, predict whether the solute would be soluble or insoluble. After making your predictions, you can check your answers by looking up the compounds in The Merck Index or the CRC Handbook of Chemistry and Physics. Generally, The Merck Index is the easier reference book to use. If the substance has a solubility...
Hi can someone help me with question 2? It deals with Rf values
and the collected data is given below!
Results: Rf Values Of Compounds In Solvents Solvents 100% 50% hexanes 75% hexanes 25% ethyl 100% ethyl Hexane 25% hexanes 75% ethyl acetate 50% ethyl Compounds acetate acetate acetate trans-Stilbene 0.125 0.419 0.781 0.594 0.906 9-Fluorenone 0.156 0.677 0.906 0.375 0.843 Benzoic Acid 0.094 0.742 0.813 0.656 0.937 #2.) For each of the solvents used, rank the compounds (trans-stilbene, 9-fluorenone,...
2. You found that naphthalene is more soluble in petroleum ether than water. How do you account for this difference in solubility? 3. Solutions of hydrochloric acid caused the light bulb to glow (or caused the conductivity meter to report a higher value), brighter than solutions of acetic acid. How do you account for the difference in behavior between these two compounds? 4. Hexane is an organic solvent that has a density of 0.6603 g/cm at 20°C. If hexane is...
4. Based on what you know about solubility and recrystallization, which of the following solid/solvent combinations can be used for recrystallization? (5 pts) A. Naphthalene/ water B. Urea/hexane c. Benzoic acid/ water D. All of the above
16. Would you expect 2-octanone to be soluble in water? Would you expect butanal to be soluble in water? Would either of them be more soluble in hexane than in water? Explain. 25. Criticize the following techniques: isten (a) Heating a mixture that contains n-hexane using an open flame. (b) For a reaction, heating a mixture that contains a large amount of toluene using hot water bath. (c) Running s reaction with tert-butyl alcohol that is cooled to 0°C in...
02) Match the waste to the appropriate container (some containers can be used more than once, some not at all): (5 points) Bromobenzene Acetylsalicylic acid crystalline Acetone Unused aniline Methylene fluoride A. Non-halogenated organic waste B. Halogenated organic waste C. Broken glass box D. Sink E. Solid waste bin
Please help?!?!
When ACE. ASP and CAF were analyzed by TLC using 2:9:9 mixture of t-butyl alcohol. 4-methyl-2-pentanone and ethyl acetate respectively the following R_f values were obtained: ACE (0.51), ASP (0.15) and CAF (0.35). These results are not the same ones obtained when using 2percentage acetic acid and 98percentage ethyl acetate as the mobile phase? Explain why were the results different for our case (TLC shown) particularly for caffeine. Give the R_f values you obtained in lab for the...
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