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Concept explainers
(a)
Interpretation:
The molar mass of the compound is to be calculated.
Concept introduction:
The freezing point is the temperature at which both the solid and liquid phases coexist in equilibrium. It is the temperature at which the vapor pressure of the substance in the liquid state becomes equal to the vapor pressure in a solid state.
The formula to calculate the change in freezing point is as follows:
Here,
(b)
Interpretation:
The empirical and the molecular formula of the compound are to be determined.
Concept introduction:
An empirical formula gives the simplest whole number ratio of atoms of each element present in a molecule. The molecular formula tells the exact number of atoms of each element present in a molecule.
(c)
Interpretation:
The Lewis structures for the compound that forms hydrogen bonds and one that does not form hydrogen bonds are to be drawn.
Concept introduction:
Lewis structure is basically a simplified representation of the structure of any molecule or atom. Lewis structure shows the bonding between the atoms and the lone pairs of electrons as dot.
The steps to draw the Lewis structure of any molecule are as follows:
1. Write the letter
2. Count the total number of valence electrons in the molecule. In case of charged molecules subtract the positive charge from the total number of valence electrons and add the negative charge to the total number of valence electrons.
3. Assign two electrons between two atoms and join them via a single bond. Place the remaining valence electrons as lone pairs such that octet of each element is achieved. Use multiple bonds to complete the octet.
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Chapter 13 Solutions
CHEMISTRY:MOLECULAR...(LL)-W/CONNECT
- A pdf file of your hand drawn, stepwise mechanisms for the reactions. For each reaction in the assignment, you must write each mechanism three times (there are 10 reactions, so 30 mechanisms). (A) do the work on a tablet and save as a pdf., it is expected to write each mechanism out and NOT copy and paste the mechanism after writing it just once. Everything should be drawn out stepwise and every bond that is formed and broken in the process of the reaction, and is expected to see all relevant lone pair electrons and curved arrows. Aldol: NaOH HO H Δ NaOH Δarrow_forwardNonearrow_forwardDraw structures corresponding to the following names and give IUPAC names for the following compounds: (8 Point) a) b) c) CH3 CH2CH3 CH3CHCH2CH2CH CH3 C=C H3C H H2C=C=CHCH3 d) CI e) (3E,5Z)-2,6-Dimethyl-1,3,5,7-octatetraene f) (Z)-4-bromo-3-methyl-3-penten-1-yne g) cis-1-Bromo-2-ethylcyclopentane h) (5R)-4,4,5-trichloro-3,3-dimethyldecanearrow_forward
- Draw a Newman projection from carbon 3 to carbon 2 in the highest energy conformation for the following molecule. What is this conformation called? What kind of strain is present? Brarrow_forwardWhich of the following dienophiles is most reactive in a Diels-Alder reaction: Please explain why the correct answer to this question is option 5. Please provide a detailed explanation.arrow_forwardWhich of the following would you expect to be aromatic? Please provide a detailed explanation.arrow_forward
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