three molecules of each compound, i.e. draw the molecules next to one another to visualize IMF Propane, CH3CH2CH3 Heptane, CH3(CH2)5CH3 Propanol, CH3CH2CH2OH Heptanol, CH3(CH2)6OH For each compound, consider whether or not H-bonding can occur between its molecules. Use a dashed line to show any H-bonding. For each compound,
Formal Charges
Formal charges have an important role in organic chemistry since this concept helps us to know whether an atom in a molecule is neutral/bears a positive or negative charge. Even if some molecules are neutral, the atoms within that molecule need not be neutral atoms.
Polarity Of Water
In simple chemical terms, polarity refers to the separation of charges in a chemical species leading into formation of two polar ends which are positively charged end and negatively charged end. Polarity in any molecule occurs due to the differences in the electronegativities of the bonded atoms. Water, as we all know has two hydrogen atoms bonded to an oxygen atom. As oxygen is more electronegative than hydrogen thus, there exists polarity in the bonds which is why water is known as a polar solvent.
Valence Bond Theory Vbt
Valence bond theory (VBT) in simple terms explains how individual atomic orbitals with an unpaired electron each, come close to each other and overlap to form a molecular orbital giving a covalent bond. It gives a quantum mechanical approach to the formation of covalent bonds with the help of wavefunctions using attractive and repulsive energies when two atoms are brought from infinity to their internuclear distance.
- Draw three molecules of each compound, i.e. draw the molecules next to one another to visualize IMF
- Propane, CH3CH2CH3
- Heptane, CH3(CH2)5CH3
- Propanol, CH3CH2CH2OH
- Heptanol, CH3(CH2)6OH
- For each compound, consider whether or not H-bonding can occur between its molecules. Use a dashed line to show any H-bonding.
- For each compound, consider whether or not any polar bonds are present
- Use a different coloured pen to identify any polar bonds
- Which compounds are polar? Which compounds are nonpolar? Explain your reasoning
- Compare your drawings for propanol and heptanol.
- Which compound has stronger dispersion forces? Explain your answer
- Which compound has a higher boiling point? Explain your answer
- Compare your drawings of heptanes and heptanol
- Which compound is more polar? Explain your answer
- Which compound is more soluble in water? Explain your answer
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- Compare your drawings for propane and heptane
- Which compound has stronger dispersion forces? Explain your answer
- Which compound has a higher boiling point? Explain your answer
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