Q: 1400 Mo [D] H. [C] Pressure (in mm Hg) 1000 [A] 800 600 400 [B] E. 200 - 20 60 100 140 180 260…
A: Melting point is defined as the temperature at which a solid substance melts. In the given phase…
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A: 1. In powder method, instead of taking a single crystal ,a finely powdered mass of crystalline…
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Q: if everything is being equal, as molecular weight decreases does the boiling point?
A: Elevation of boiling point is given by:
Q: Why are there bubbles escaping from the open end of the capillary tube during boiling? The…
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Q: A student measured the melting point range of an unknown solid to be 72.4 to 78.6 degrees celsius.…
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Q: A student was trying to prepare acetaminophen in the laboratory. She found a melting point range of…
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Q: Discuss how relative humidity in a cold storage room can influence the vapor pressure deficit.
A: Interpretation - To discuss how relative humidity in a cold storage room can influence the vapor…
Q: Enumerate methods to determine a compound's melting point.
A: Melting point of a compound can be defined as the temperature at which the solid changes into liquid…
Q: Describe how to obtain the melting point of a compound that sublimates. Why?
A: The melting point means the temperature when a solid substance melts into a liquid substance. That…
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Q: How much solid should be placed in a melting-point capillary tube?
A: The amount of solid that should be placed in a melting point capillary tube is given below.
Q: Cite some possible applications of determining the melting point of a substance. Explain briefly
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Q: The melting point of sodium iodide is 661 °C and the melting point of water is 0 °C. Explain why the…
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Q: A student reports a melting point of 121°C. What is objectionable about that? 1) the melting point…
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Q: Why is the capillary tube placed such that the open end is above the oil level?
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Q: Choose any (1) liquid compound and indicate the following:
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Q: A student tests a crystalline product's melting point twice. In one test, a capillary tube with a…
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Q: Arrange the following in increasing order of melting point (small to large). Briefly defend your…
A: Given information:
Q: A student was trying to prepare acetaminophen in the laboratory. She found a melting point range of…
A: The theoretical range for the same compound is 169-173oC. The range of melting point for…
Q: Q2) why is oil used as a bath instead of water? Q3) what is the effect of impurities on melting…
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Q: Q3) what is the effect of impurities on melting point?
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Q: Cyanamide, NH2CN, has a melting point of 45 °C. (a) Draw a dot-and-cross diagram to illustrate the…
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Q: In the determination of melting points, oil bath are always preferred to water baths. why?
A: Oils like paraffin liquids are used in oil bath for melting point determination instead of heating…
Q: 1. What would it mean if the melting point had a wide range in temperature rather than a narrow…
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Q: Arrange the following compounds in order of increasing melting point. HO. Blank 1< Blank 2 < Blank 3…
A: The Temperature at which the substance changes its state from solid to liquid is known as Melting…
Q: Which of the following best indicates a pure sample when taking a melting point? Choose one answer…
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Q: 4. A young chemist has synthesized what he believed to be acetaminophen. He measured the melting…
A: Acetaminophen should have melting point exactly between the range of 169-170.5 oC as per literature…
Q: Aside from London dispersion forces, which substance d interactions to be effective?
A: There are different types of forces act between the molecules:- Hydrogen bonding Dipole-dipole…
Q: 1. What would it mean if the melting point had a wide range in temperature rather than a narrow…
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Q: Explain the behavior of a cooled and remelted sample.
A: Given- A capillary shows a substantially higher melting point of 145°C. Repeated recrystallization…
Q: h) You complete the effective drying of the needlelike crystals and now you will take a melting…
A: The temperature at which solid substance is converted to liquid substance is known as melting point.
What effect does the presence of impurity have on the melting point?
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- is a melting point alone sufficient to idenitfy a compound? why or why not?Q1/Why do we use oil instead of water to determine the melting point of chemicals? Q2/What is the reason for the variation in the measured melting point of the same chemical? Q3/What is the best type of oil used to measure the melting point of chemicals? Why?1. A pure compound has a melting point of 102-103°C. Predictthe general effect on the melting point whena small amount of an impurity with a melting point of 212-214°C is added to the compound.
- How much solid should be placed in a melting-point capillary tube?What is the relationship between vapor pressure at a temperature and its melting point so that sublimation can occur? What are the different phase changes involved in the purification using sublimation experiment?Explain the Melting Point (mp) ?
- What type of solid-liquid extraction is done when the tea leaves is boiled in water?Explain how the melting point of a compound that sublimates gets obtainedA student was trying to prepare acetaminophen in the laboratory. She found a melting point range of 169-173. The melting of acetaminophen is reported to be 168-172c. How could the student have verified that the produce is acetaminophen? Retake the sample melting point with more material in the sample. Ask the lab partner to measure the melting point of the sample. Take a mixed melting point with an authentic sample of acetaminophen