Input interpretation
1c of styrene
Unit conversions
€0.01 (euros)
Lewis structure
Draw the Lewis structure of styrene. Start by drawing the overall structure of the molecule, ignoring potential double and triple bonds: Count the total valence electrons of the carbon (n_C, val = 4) and hydrogen (n_H, val = 1) atoms: 8 n_C, val + 8 n_H, val = 40 Calculate the number of electrons needed to completely fill the valence shells for carbon (n_C, full = 8) and hydrogen (n_H, full = 2): 8 n_C, full + 8 n_H, full = 80 Subtracting these two numbers shows that 80 - 40 = 40 bonding electrons are needed. Each bond has two electrons, so in addition to the 16 bonds already present in the diagram add 4 bonds. To minimize formal charge carbon wants 4 bonds. Identify the atoms that want additional bonds and the number of electrons remaining on each atom: Fill in the 4 bonds by pairing electrons between adjacent highlighted atoms. Note that the six atom ring is aromatic, so that the single and double bonds may be rearranged: Answer: | |
Chemical names and formulas
formula | C_6H_5CH=CH_2 Hill formula | C_8H_8 name | styrene IUPAC name | vinylbenzene
Substance properties
molar mass | 104.15 g/mol phase | liquid (at STP) melting point | -31 °C boiling point | 145.5 °C density | 0.909 g/cm^3 solubility in water | insoluble surface tension | 0.03214 N/m dynamic viscosity | 6.95×10^-4 Pa s (at 25 °C)
Units
