why does the melting point only “suggest” the identity of a substance while the mixed melting...
How does the melting point of an impure substance compare to the melting point of a pure substance?
why does compound a have a lower melting point?
4) Why does compound a have a lower melting point? (.5 pt) OH
1. Why does Paraffin Wax has a broader melting point range compares to 1-Octadecene? 2. Continue the first question, suggest a reason for the ordering of the melting points you observed. Consider the types of intermolecular forces and molecular weights of each sample.
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1. Is the melting point of substance A (a) greater than, (b)
less than or (c) equal to the
melting point of substance B?
Explain your reasoning.
2. Is the specific heat of substance A in its solid state (a)
greater than, less than, or (c)
equal to the specific heat of substance B in its solid
state?
Explain your reasoning.
3. Is the latent heat of fusion of substance A (a) greater than,
(b) less than or (c)...
Shape, melting point & solubility (2.5 pts) When melting or boiling a substance (both of which are physical changes), which kinds of attractions may be broken? Circle all that apply. hydrogen bonding covalent bonds dipole-dipole London forces vs. If I told you that only one of these molecules is a solid at room temperature, which one is that more likely to be? How can you tell from the structure? Circle the hydrophilic portion of the molecules above and put a...
1. Why are melting point measurements used only to identify organic compounds and not to measure inorganic chemicals? 2. What is Freezing point? Can you give an example in your daily life? What happens when sugar is continuously added into a cup of water? What is the difference if the saturated sugar cup of water is heated? 3.
Select all the properties that describe the substance below. Ca(OH)2 conducts when solid low melting point dissolves in oil high melting point conducts when dissolved does not conduct dissolves in water
30pts total) 1. Irwo known substances have the same melting point as an unknown substance that you obtained, how could you determine if either of the two known substances is your unknown compound? 2. You are given an impure mix of substances that contains a solid substance, Chemical X, that is soluble in ethanol at all temperatures. You know there is an insoluble impurity in the mix as well as a very soluble impurity, both in ethanol. Can you recrystallize...
help pls
Why do soluble impurities affect the melting point while insoluble impurities are expected not to affect the melting point? (3 points) Student ID: Section: Mention at least one technique that you have learned during 3210 Ta separating a mixture containing anthracene and toluic acid in 1:1 ratio. Assume luble in ether. Sketch an outline of the separation procedure you will perform in the lab (4 points)
PART B MELTING POINTS OF SOME ORGANIC SUBSTANCES Circle the pair of substances of which you measured the melting point range 7 2-naphthol (A) and naphthalene (B) benzophenone (A) and benzil (B Complete the following table: [6 marks] Hint Molecules containing only Cand H can be assumed to be non-polar Present in Present in А Stronger in which substance? Why? Intermolecular Force В (yes or no) (yes or no) London Dispersion Dipole-Dipole Hydrogen Bonding Which of the two substances that...