why doesn’t the temperature on the thermometer increase as soon as boiling begins in the flask...
Homework Answers
Boiling is a constant temperature process. The heat energy supplied goes on to convert the liquid to vapor i.e. the heat energy overcomes the intermolecular attraction forces among the liquid molecules. In case of water, the heat energy supplied breaks the hydrogen bonding interactions among water molecules. Temperature of the system does not change until all of the liquid is converted to vapor.
Add Answer to:
why doesn’t the temperature on the thermometer increase as
soon as boiling begins in the flask...
1. Briefly expalin why you should not add boiling chips to a boiling liquid? 2. Briefly...
1. Briefly expalin why you should not add boiling chips to a boiling liquid? 2. Briefly explain how and why you should position the thermometer in the distillation head during a distillation b) What is the purpose of the outer jacket on a fractionating column? c) How is the rate of heating adjusted when using a sand bath as a heat source? d) How is the distillate collected in a test tube microscale distillation? 3) What effect does an increase...
When performing the distillation, why is the position of the thermometer, at the entrance to the...
When performing the distillation, why is the position of the thermometer, at the entrance to the condenser, important? Why should it not be placed into the distillation flask?
imagine you placed a flask on top of a heater. A thermometer measures the temperature inside...
imagine you placed a flask on top of a heater. A thermometer measures the temperature inside the flask. The top of the flask is closed tightly. The flask is filled with air, and the initial temperature is 20. Write a scientific explanation for why the temperature of the gas rises when the flask is heated.
Fractionating column Thermometer Thermometer adapter Distilling head Round-bottom distilling flask Clamps Condenser Water tubing for cooling...
Fractionating column Thermometer Thermometer adapter Distilling head Round-bottom distilling flask Clamps Condenser Water tubing for cooling Vacuum adapter Boiling chips/stones/beads Round-bottom receiving flask Heating mantle Beaker for hot water bath Hot plate Closed-end capillary tubes (same as used with melting point) Small or medium test tube Rubber bands Reagents 1. Ethanol 2. DI water Above are the materials and products used in the fractional distillation procedure. Come up with 2 aspects of the protocol that are not green.
A constant-volume gas thermometer is used to measure an unknown temperature. At the temperature of boiling...
A constant-volume gas thermometer is used to measure an unknown temperature. At the temperature of boiling water, the absolute pressure of the gas in the bulb is 1.239 x 10 Pa. The absolute pressure is 1.105 x 10% Pa at the unknown temperature. What is that temperature on the Celsius scale to the nearest degree? temperature
a. Is distillation a purification or a characterization technique? Explain. b. Where the thermometer bulb should...
a. Is distillation a purification or a characterization technique? Explain. b. Where the thermometer bulb should be placed in order to measure the temperature of the hot vapor accurately during distillation? c. What is the purpose of the “packing” in a fractional distillation column? d. Why should a distillation flask never be more than ¾ full before starting a distillation? e. You are fractionally distilling 100 mL of a 1:1 solution of cyclohexane and toluene. After 2 mL has distilled...
Assemble the glassware for fractional distillation according to the diagram and discussion above. Make certain that...
Assemble the glassware for fractional distillation according to the diagram and discussion above. Make certain that all joints are secure and that the apparatus is appropriately supported. Remember to allow for space below the distillation flask for the heating mantle and below the receiving flask for an ice bath. Pay extra attention to the positioning of the bulb of the thermometer as mentioned in the introduction. It is critical that the thermometer be positioned correctly for accurate temperature measurement. Using...
BOILING POINT 1. Why is it necessary to position the sample tube right next to the thermometer bulb in the Thiele tube? 2. The normal boiling point of benzene is 80 degrees C. What is the vapor pressu...
BOILING POINT 1. Why is it necessary to position the sample tube right next to the thermometer bulb in the Thiele tube? 2. The normal boiling point of benzene is 80 degrees C. What is the vapor pressure of benzene at 80 degrees C? 3. Define boiling point. How does this definition describe what is occurring in micro-boiling point determination method i.e. that the boiling point is the temperature at which the liquid levels inside and outside of the capillary...
Explain why the boiling point of a two-component mixture rises slowly throughout a simple distillation when...
Explain why the boiling point of a two-component mixture rises slowly throughout a simple distillation when the boiling-point differences or not large
While performing a distillation, the relatively steady temperature of the While performing a distillation, the relatively...
While performing a distillation, the relatively steady
temperature of the
While performing a distillation, the relatively steady temperature of the distillation apparatus begins to increase at a moderate rate. What does this most likely indicate? Select the correct answer. o There is a leak in the glassware. One of the components of the sample is beginning to boil. One of the components of the sample has just finished boiling. The heat source has malfunctioned.
When performing the distillation, why is the position of the thermometer, at the entrance to the condenser, important? Why should it not be placed into the distillation flask?
A constant-volume gas thermometer is used to measure an unknown temperature. At the temperature of boiling water, the absolute pressure of the gas in the bulb is 1.239 x 10 Pa. The absolute pressure is 1.105 x 10% Pa at the unknown temperature. What is that temperature on the Celsius scale to the nearest degree? temperature
While performing a distillation, the relatively steady
temperature of the
While performing a distillation, the relatively steady temperature of the distillation apparatus begins to increase at a moderate rate. What does this most likely indicate? Select the correct answer. o There is a leak in the glassware. One of the components of the sample is beginning to boil. One of the components of the sample has just finished boiling. The heat source has malfunctioned.
Most questions answered within 3 hours.
-
Draw a Supply and Demand Graph for yourself. Now draw a dashed
line vertically down through...
asked 1 minute from now -
A 3.15-g bullet embeds itself in a 1.17-kg block, which is
attached to a spring of...
asked 38 seconds ago -
A hawk is flying horizontally at 24.0 m/s in a straight line,
185 m above the...
asked 1 minute ago -
1a. An aqueous solution of calcium hydroxide is
standardized by titration with a 0.116 M solution...
asked 3 minutes ago -
In response to concerns about nutritional contents of fast
foods, McDonald's has announced that it will...
asked 19 minutes ago -
A gun with inertia 5.5 kg fires a 13-g bullet at a stationary
target located 1.0...
asked 20 minutes ago -
A box contains twenty-five screws which are identical in size,
but 13 of which are copper...
asked 23 minutes ago -
“Is it possible that objectively
a product is high quality but subjectively low
quality?”
Please support...
asked 24 minutes ago -
OCHEM LAB
Why does hydration of 2-methyl-3-butyn-2-ol give the ketone,
3-hydroxy-3-methyl-2-butanone (4), rather than the aldehyde,...
asked 34 minutes ago -
A sample of gas at 15 ⁰C and 0.988 atm has a volume of 2.58
liters....
asked 41 minutes ago -
Enzymes are required in retroviruses because the genome
is not used directly as mRNA (T/F)
Please...
asked 39 minutes ago -
An AC generator supplies an rms voltage of 240 V at 50.0 Hz. It
is connected...
asked 52 minutes ago