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1.73 m 213 3. Are the substances lauric acid and stearic acid solids or liquids at...
1. solids, liquids, and solutions, and intermolecular forces. 1. For each pair of substances, identify which...
1. solids, liquids, and solutions, and intermolecular forces. 1. For each pair of substances, identify which has the highest melting point. For each, briefly explain your reasoning Ne: e. Surface area also matters. More surface area, more contact, stronger cohesion. Your book mentions this. Based on that, which do you think is most likely to be a solid at room temperature?
KBr m-nitrobenzoic benzophenone 3. Look up and record the solubility in water for each of your three compounds 4. De...
KBr
m-nitrobenzoic
benzophenone
3. Look up and record the solubility in water for each of your three compounds 4. Define pKa and list the pKa of each of your solids 5. How does pH of a solution affect solubility of the organic acid? 6. How does polarity affect solubilitv?
3. Look up and record the solubility in water for each of your three compounds 4. Define pKa and list the pKa of each of your solids 5. How does pH...
Group 3 Bag C: KBr, m-nitrobenzoic acid, Benzophenone Project 6: Properties of Matter and Separations Week...
Group 3 Bag C: KBr, m-nitrobenzoic acid, Benzophenone
Project 6: Properties of Matter and Separations Week 1: Prelab Organizational Questions 1. What is your group's unknown number and which compounds are in your group's unknown? 2. Draw the structures of your group's compounds. Be sure to include valence electrons. 3. Look up and record the solubility in water for each of your three compounds. 4. Define pka and list the pka of each of your solids. 5. How does pH...
complete the stoichiometry table for the process above Experimental Notes 4, H ОН NaBH4 NaOH OH...
complete the stoichiometry table for the process above
Experimental Notes 4, H ОН NaBH4 NaOH OH H2O OH Step 1: Procedure for the Sodium Borohydride Reduction of 3-Ethoxy-4-hydroxybenzaldehyde: Dissolve 1.62 g of 3-ethoxy-4-hydroxybenzaldehyde in 10 mL of 1.0 M NaOH in a 125 mL Erlenmeyer flask with a magnetic stir bar. Cool the flask in a cold-water bath, and then add, in small portions, 0.30 g of NaBH, over five minutes. Remove the cold-water bath and allow the reaction flask...
Molar Mass question 3. Calculate the quantity, in grams, of formic acid and sodium formate necessary...
Molar Mass question
3. Calculate the quantity, in grams, of formic acid and sodium formate necessary to make 500 mL of a buffer that has a formic acid concentration of 0.75 M and a sodium formate concentration of 0.75 M. You will need to look up or calculate the molar masses of these two compounds as your first step. See question 5 below for their chemical formulas.
Find the crude yield and percent yield of trans-4-methoxycinnamic acid Find the crude and percent yield...
Find the crude yield and percent yield of trans-4-methoxycinnamic
acid
Find the crude and percent yield of ethyl trans-4
methoxycinnamic acid
Synthesis of trans-4-methoxycinnamic acid 0.585 gused To a 25 mL round-bottom flask equipped with a stir bar, add 1 mL of pyridine (Caution! Pyridine is toxic!) followed by 320 mg of 4-methoxybenzaldehyde, 320mg 10. 200ML 585 mg of malonic acid and 33 mg of B-alanine. Clamp the round-bottom flask Ucdi over a stir plate in a sand bath and...
hydrochloride avid hcl is aclassified as a strong Hydrochloric acid, HCl, is classified as a strong...
hydrochloride avid hcl is aclassified as a strong
Hydrochloric acid, HCl, is classified as a strong acid in water. This means that it produces 1. hydrogen ions a) no b) a relatively small fraction of the maximum number of hydrogen ions c) a relatively large fraction of the maximum number of hydrogen ions d) 100 % of the maximum number of possible hydrogen ions 2. Benzoic acid is considered to be a polar molecule. Which one completely dissolve benzoic acid...
3. If 15.0 mL of 0.125 M phosphoric acid is titrated with 0.100 M NaOH, what...
3. If 15.0 mL of 0.125 M phosphoric acid is titrated with 0.100 M NaOH, what volume of the titrant (in mL) must be added to completely neutralize the acid? Show all of your work (including the chemical equation). (1 point) Post-lab Questions: Experiment #9: Acid-Base Titrations Student Learning Objectives : Students will gain practice with the accurate preparation of solutions. Students will perform acid-base titrations and prepare titration curves. Students will identify strong and weak acids by the shapes...
can someone please answer number one? im so lost DYES AND DYEING CHAPTER 1. Calculate the...
can someone please answer number one? im so lost
DYES AND DYEING CHAPTER 1. Calculate the amounts of salicylic acid, 1-naphthol, 2-naphthol, 8-anilino-1-naph- thalenesulfonic acid ammonium salt, or N,N-dimethylaniline needed for Part 1B of this experiment (use molecules as assigned by your TA). 190mg 3-aminobenzene 2.5mL Sulfonic acid 2.5% sodium carbonate solution 81mg Sodium nitrate 2. What is the purpose of the sodium carbonate in Part 1A? Why do we add glacial acetic acid in Part 13 when we react...
For the portion of the procedure shown below, create a flow chart for the acid-base extraction...
For the portion of the procedure shown below, create a
flow chart for the acid-base extraction at the end of the Grignard
Reaction. Start your flow chart with the crude reaction (see below)
mixture before addition of HCl and continue it until the product is
recovered. Depict the desired organic product, in its correct form
at each step of the procedure.
Crude reaction mixture procedure for reference: To
the flask add Mg turnings (120 mg, 4.94 mmol) to the flask...
1. solids, liquids, and solutions, and intermolecular forces. 1. For each pair of substances, identify which has the highest melting point. For each, briefly explain your reasoning Ne: e. Surface area also matters. More surface area, more contact, stronger cohesion. Your book mentions this. Based on that, which do you think is most likely to be a solid at room temperature?
KBr
m-nitrobenzoic
benzophenone
3. Look up and record the solubility in water for each of your three compounds 4. Define pKa and list the pKa of each of your solids 5. How does pH of a solution affect solubility of the organic acid? 6. How does polarity affect solubilitv?
3. Look up and record the solubility in water for each of your three compounds 4. Define pKa and list the pKa of each of your solids 5. How does pH...
Group 3 Bag C: KBr, m-nitrobenzoic acid, Benzophenone
Project 6: Properties of Matter and Separations Week 1: Prelab Organizational Questions 1. What is your group's unknown number and which compounds are in your group's unknown? 2. Draw the structures of your group's compounds. Be sure to include valence electrons. 3. Look up and record the solubility in water for each of your three compounds. 4. Define pka and list the pka of each of your solids. 5. How does pH...
complete the stoichiometry table for the process above
Experimental Notes 4, H ОН NaBH4 NaOH OH H2O OH Step 1: Procedure for the Sodium Borohydride Reduction of 3-Ethoxy-4-hydroxybenzaldehyde: Dissolve 1.62 g of 3-ethoxy-4-hydroxybenzaldehyde in 10 mL of 1.0 M NaOH in a 125 mL Erlenmeyer flask with a magnetic stir bar. Cool the flask in a cold-water bath, and then add, in small portions, 0.30 g of NaBH, over five minutes. Remove the cold-water bath and allow the reaction flask...
Molar Mass question
3. Calculate the quantity, in grams, of formic acid and sodium formate necessary to make 500 mL of a buffer that has a formic acid concentration of 0.75 M and a sodium formate concentration of 0.75 M. You will need to look up or calculate the molar masses of these two compounds as your first step. See question 5 below for their chemical formulas.
Find the crude yield and percent yield of trans-4-methoxycinnamic
acid
Find the crude and percent yield of ethyl trans-4
methoxycinnamic acid
Synthesis of trans-4-methoxycinnamic acid 0.585 gused To a 25 mL round-bottom flask equipped with a stir bar, add 1 mL of pyridine (Caution! Pyridine is toxic!) followed by 320 mg of 4-methoxybenzaldehyde, 320mg 10. 200ML 585 mg of malonic acid and 33 mg of B-alanine. Clamp the round-bottom flask Ucdi over a stir plate in a sand bath and...
hydrochloride avid hcl is aclassified as a strong
Hydrochloric acid, HCl, is classified as a strong acid in water. This means that it produces 1. hydrogen ions a) no b) a relatively small fraction of the maximum number of hydrogen ions c) a relatively large fraction of the maximum number of hydrogen ions d) 100 % of the maximum number of possible hydrogen ions 2. Benzoic acid is considered to be a polar molecule. Which one completely dissolve benzoic acid...
3. If 15.0 mL of 0.125 M phosphoric acid is titrated with 0.100 M NaOH, what volume of the titrant (in mL) must be added to completely neutralize the acid? Show all of your work (including the chemical equation). (1 point) Post-lab Questions: Experiment #9: Acid-Base Titrations Student Learning Objectives : Students will gain practice with the accurate preparation of solutions. Students will perform acid-base titrations and prepare titration curves. Students will identify strong and weak acids by the shapes...
can someone please answer number one? im so lost
DYES AND DYEING CHAPTER 1. Calculate the amounts of salicylic acid, 1-naphthol, 2-naphthol, 8-anilino-1-naph- thalenesulfonic acid ammonium salt, or N,N-dimethylaniline needed for Part 1B of this experiment (use molecules as assigned by your TA). 190mg 3-aminobenzene 2.5mL Sulfonic acid 2.5% sodium carbonate solution 81mg Sodium nitrate 2. What is the purpose of the sodium carbonate in Part 1A? Why do we add glacial acetic acid in Part 13 when we react...
For the portion of the procedure shown below, create a
flow chart for the acid-base extraction at the end of the Grignard
Reaction. Start your flow chart with the crude reaction (see below)
mixture before addition of HCl and continue it until the product is
recovered. Depict the desired organic product, in its correct form
at each step of the procedure.
Crude reaction mixture procedure for reference: To
the flask add Mg turnings (120 mg, 4.94 mmol) to the flask...
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