If 2 mL of water was added to B-Naphthol and heated in a steam bath, what...
If 2 mL of water was added to B-Naphthol and heated in a steam bath, what happens? Does it dissolve or not?
Homework Answers
Beta naphthols are a type of phenols and are insoluble in water. But can be made soluble by converting them into naphtholate ions by treating with alkali like NAOH.
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If 2 mL of water was added to B-Naphthol and heated in a steam
bath, what...
If 2 mL of water is added to a test tube of m-Nitroaniline and warmed in...
If 2 mL of water is added to a test tube of m-Nitroaniline and warmed in the steam bath. What happens? Does it dissolve or not?
Why is already-heated water added to the water bath under the reaction mixture as opposed to...
Why is already-heated water added to the water bath under the
reaction mixture as opposed to simply heating the water directly
with a hot plate during the Grignard reaction?
Why is the initial portion of bromobenzene in ether added
before additional ether is added?
Why is additional ether added before the second portion of
bromobenzene is added?
During what part of the purification procedure is any unreacted
acetophenone removed from the product? Be specific. Answer the
question assuming that there...
A 25 g cube of metal was heated in a hot temperature bath to 80oC and then added to 50 mL of deionized water. Using the following graph, explain how you would determine the temperature change tha...
A 25 g cube of metal was heated in a hot temperature bath to 80oC and then added to 50 mL of deionized water. Using the following graph, explain how you would determine the temperature change that has occurred in the system. The metal was added to the calorimeter (Styrofoam cup with water) at 180 seconds. What is the initial temperature of the water and the metal? What is the final temperature of the metal and the water? What occurred...
A volume of water was heated to 82.86C and immediately added to 50.31 mL of water...
A volume of water was heated to 82.86C and immediately added to 50.31 mL of water at 22:45 °C contained within a coffee cup calorimeter. The final temperature of the mixture was 37,08°C. The final volume of water inside the calorimeter was 94.33 mL. Calculate the following: Note: Heat capacity a. volume of hot water added is 4.18 *Consider sig fig b. masses of hot and cold water (density of water = 1,00 g/mL) c. changes in temperature (AT) of...
A 16.260g piece of metal was heated in a hot water bath at . The hot...
A 16.260g piece of metal was heated in a hot water bath at . The hot metal was then transferred to a calorimeter containing 50.00 mL of water (d of H2O= 1.00 g/mL). From the time-temperature plot, the initial and final temperature for the water were determined to be and , respectively. A) calculate heat (q) gained by the calorimeter and water assuming Ccal= , qH2O= (4.184 J/gC)(mwater)() and qcal=Ccal. 95.5°C 23.76°C 26.18°C 21.0J/ C T We were unable to...
1. A volume of water was heated to 83.90 °C and immediately added to 48.11 mL...
1. A volume of water was heated to 83.90 °C and immediately added to 48.11 mL of water at 23.98 °C contained within a coffee cup calorimeter. The final temperature of the mixture was 40.86 °C. The final volume of water inside the calorimeter was 90.45 mL. Assuming that them heat capacity of the solution is 4.18 J/g/°C, calculate the following: a. The volume of hot water added ml b. The mass of hot water (dwater = 1.00 g/mL) c....
used. Experimental . Place 2.0 g of salicylic acid in a 125-mL conical flask. 2. Add...
used. Experimental . Place 2.0 g of salicylic acid in a 125-mL conical flask. 2. Add 4.0 ml (d = 1.08 g/mL; 4.3 g) of acetic anhydride and 6-8 drops of 85% phosphoric acid. 3. Swirl the flask to mix all reagents, and place it in a 70°C water bath. Heat for about 10 minutes. 4. Remove the flask from the water bath and add 2 mL of cold water drop- wise, swirling the flask after each addition, 5. Add...
1.00 mL of water at 25 C is heated to 100 C, at which point it...
1.00 mL of water at 25 C is heated to 100 C, at which point it boils at an atmospheric pressure of 1 atm and is vaporized. What is the difference in volume (in mL) when this happens? (At 25 C, liquid water has a density of 0.997 g/mL.)
a 20.94-g sample of an unknown metal is heated to 99.4 degrees Celsius in a hot water bath until thermal equilibrium is reached
a 20.94-g sample of an unknown metal is heated to 99.4 degrees Celsius in a hot water bath until thermal equilibrium is reached. The metal is quickly transferred to 100 mL of water at 22.0 degrees Celsius contained in a styrofoam cup. The thermal equilibrium temperature of the metal plus water mixture is 24.6 degrees Celsius. What is the Specific heat capacity of the metal?
A quantity of water is heated with steam of 5 bar from a temperature of 35oC...
A quantity of water is heated with steam of 5 bar from a temperature of 35oC to 100oC over a period of 1200 s. The mass of water is 50 kg and the Cp for water is 4.19 kJ/kg.oC. Find the amount of steam required for this process.
Why is already-heated water added to the water bath under the
reaction mixture as opposed to simply heating the water directly
with a hot plate during the Grignard reaction?
Why is the initial portion of bromobenzene in ether added
before additional ether is added?
Why is additional ether added before the second portion of
bromobenzene is added?
During what part of the purification procedure is any unreacted
acetophenone removed from the product? Be specific. Answer the
question assuming that there...
A volume of water was heated to 82.86C and immediately added to 50.31 mL of water at 22:45 °C contained within a coffee cup calorimeter. The final temperature of the mixture was 37,08°C. The final volume of water inside the calorimeter was 94.33 mL. Calculate the following: Note: Heat capacity a. volume of hot water added is 4.18 *Consider sig fig b. masses of hot and cold water (density of water = 1,00 g/mL) c. changes in temperature (AT) of...
1. A volume of water was heated to 83.90 °C and immediately added to 48.11 mL of water at 23.98 °C contained within a coffee cup calorimeter. The final temperature of the mixture was 40.86 °C. The final volume of water inside the calorimeter was 90.45 mL. Assuming that them heat capacity of the solution is 4.18 J/g/°C, calculate the following: a. The volume of hot water added ml b. The mass of hot water (dwater = 1.00 g/mL) c....
used. Experimental . Place 2.0 g of salicylic acid in a 125-mL conical flask. 2. Add 4.0 ml (d = 1.08 g/mL; 4.3 g) of acetic anhydride and 6-8 drops of 85% phosphoric acid. 3. Swirl the flask to mix all reagents, and place it in a 70°C water bath. Heat for about 10 minutes. 4. Remove the flask from the water bath and add 2 mL of cold water drop- wise, swirling the flask after each addition, 5. Add...
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