describe how the boiling temperature of a refluxing liquid compares to its boiling temperature when mixed...
Homework Answers
with boiling reflux= main function of boiling reflux to maintain the reaction condition inwhich amount of solvent are keeping same with use of refluxer [spiral pass with high and low temperature connection]. It has gain interest for higher temperature reaction than boiling point of solvent. solvent didn't accumulate with reactant.
without boiling reflux= in this, solvent get vaporised at higher temperaure than boiling point. Remaing ractant form accumulation/ missicilbe liquid and which decereses the reactivityif reaction.
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describe how the boiling temperature of a refluxing liquid compares
to its boiling temperature when mixed...
1. Refer to the vapor-liquid composition curve for a benzene/toluene solution below. a) Are benze...
Need assistance with graph and pre-lab questjons
1. Refer to the vapor-liquid composition curve for a benzene/toluene solution below. a) Are benzene and toluene miscible or immiscible? b) What is the boiling point of a benzene-toluene mixture that is 20% benzene? c) What percent benzene is a benzene-toluene mixture that boils at 85°C? 110 100 95 0F-- 85 A" 80 75 0 10 20 30 40 50 60 7o 80 90 100 Molo porcont benzene 2. Refer to the Boiling...
Distillation 11 4. The organic liaud in Sicam distillatior vaporites at: a) Lower temperature than its...
Distillation 11 4. The organic liaud in Sicam distillatior vaporites at: a) Lower temperature than its boiling point b) Higher temperature than its boiling point c) At its boiling point d) None of the mentioned 2. In steam distillation, the liquid boils when th allation, the liquid boils when the sum of the organic liquid vapor pressure and the water vapor pressure is: a) Greater than atmospheric pressure b) Lesser than atmospheric pressure Equals to atmospheric pressure d) None of...
9. (4 pts.) When refluxing, a mixture of toluene and water is refluxing and condensing in...
9. (4 pts.) When refluxing, a mixture of toluene and water is refluxing and condensing in the Hickman still head. A specific mixture of toluene and water will actually boil at a LOWER TEMPERATURE then either pure toluene or pure water. This is the azeotrope mixture, toluene and water can from an azeotrope. The practical consequence of this is that the toluene solvent will always have at least some water in it when it boils, which is how we are...
Liquid nitrogen is often used as an effective coolant, as its boiling temperature is far below...
Liquid nitrogen is often used as an effective coolant, as its boiling temperature is far below the freezing temperature of water. Specifically, the boiling point of liquid nitrogen is 77.0 K. A 0.650-kg block of iron at an initial temperature of 293.15 K is immersed in an insulated bath of liquid nitrogen with an initial temperature of 77.0 K. After the iron and the liquid nitrogen reach a state of thermal equilibrium, the iron block has cooled to a final...
1.In chemistry, what does the term “reflux” mean when heating a liquid? How is that different...
1.In chemistry, what does the term “reflux” mean when heating a liquid? How is that different from boiling? 2.When the condenser is set up, why is the coolant water set to flow gently through the tubing instead of at a hard, rapid flow? 3.When heating, why do you wait to start your timer for the reaction until it has started to reflux? 4.Why is the filtration set-up rinsed with hexane before use?
Find the final temperature and mass in each phase when 50 kJ of heat is added...
Find the final temperature and mass in each phase when 50 kJ of heat is added to 1 kg of a solid at 90 K if its melting temperature is 100 K, its boiling temperature is 200 K, its specific heat as a solid is 1000 J/kg·K, and as a liquid is 2000 J/kg·K, and its latent heat of fusion is 100 kJ/kg.
Calculate the energy change with the correct sign) when the temperature of 100.0 mL of liquid...
Calculate the energy change with the correct sign) when the temperature of 100.0 mL of liquid water decreases by 4.60 °C. energy change = Calculate the mass of KCl needed to absorb the same amount of energy when dissolved in water. A Holution (KCI) = 983.5J/mol. mass
How much energy is needed to vaporize 230.0 g of liquid benzene (C6H6) at its boiling...
How much energy is needed to vaporize 230.0 g of liquid benzene (C6H6) at its boiling point? The molar heat of vaporization of benzene is 33.83 kJ/mol.
2) Briefly describe how viscosity changes as a function of temperature for both a liquid and...
2) Briefly describe how viscosity changes as a function of temperature for both a liquid and gas. Provide an explanation for each. a maid. danimacar os commenti ya Ucrans
When a solid metallic element is heated to its melting temperature, it requires a certain amount...
When a solid metallic element is heated to its melting temperature, it requires a certain amount of heat to transform to the liquid phase. What is the name of that heat energy? How does the Knoop hardness test work?
Need assistance with graph and pre-lab questjons
1. Refer to the vapor-liquid composition curve for a benzene/toluene solution below. a) Are benzene and toluene miscible or immiscible? b) What is the boiling point of a benzene-toluene mixture that is 20% benzene? c) What percent benzene is a benzene-toluene mixture that boils at 85°C? 110 100 95 0F-- 85 A" 80 75 0 10 20 30 40 50 60 7o 80 90 100 Molo porcont benzene 2. Refer to the Boiling...
Distillation 11 4. The organic liaud in Sicam distillatior vaporites at: a) Lower temperature than its boiling point b) Higher temperature than its boiling point c) At its boiling point d) None of the mentioned 2. In steam distillation, the liquid boils when th allation, the liquid boils when the sum of the organic liquid vapor pressure and the water vapor pressure is: a) Greater than atmospheric pressure b) Lesser than atmospheric pressure Equals to atmospheric pressure d) None of...
9. (4 pts.) When refluxing, a mixture of toluene and water is refluxing and condensing in the Hickman still head. A specific mixture of toluene and water will actually boil at a LOWER TEMPERATURE then either pure toluene or pure water. This is the azeotrope mixture, toluene and water can from an azeotrope. The practical consequence of this is that the toluene solvent will always have at least some water in it when it boils, which is how we are...
Liquid nitrogen is often used as an effective coolant, as its boiling temperature is far below the freezing temperature of water. Specifically, the boiling point of liquid nitrogen is 77.0 K. A 0.650-kg block of iron at an initial temperature of 293.15 K is immersed in an insulated bath of liquid nitrogen with an initial temperature of 77.0 K. After the iron and the liquid nitrogen reach a state of thermal equilibrium, the iron block has cooled to a final...
Calculate the energy change with the correct sign) when the temperature of 100.0 mL of liquid water decreases by 4.60 °C. energy change = Calculate the mass of KCl needed to absorb the same amount of energy when dissolved in water. A Holution (KCI) = 983.5J/mol. mass
2) Briefly describe how viscosity changes as a function of temperature for both a liquid and gas. Provide an explanation for each. a maid. danimacar os commenti ya Ucrans
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