Question

The total number of 'sigma' and 'Pi' bonds in 2-oxohex-4-ynoic acid is____.

Answer 1

To determine the total number of sigma ($\sigma$) and pi ($\pi$) bonds in 2-oxohex-4-ynoic acid, analyze the structure:
$\text{HO-CH}_2 - \text{C(=O)} - \text{CH}_2 - \text{C} \equiv \text{C} - \text{CH}_3$
Count the sigma bonds ($\sigma$-bonds):
$6 \, \sigma$-bonds in carbon-hydrogen (C-H) bonds.
$5 \, \sigma$-bonds in carbon-carbon (C-C) single bonds.
$2 \, \sigma$-bonds in carbon-oxygen (C=O and C-O) bonds.
$1 \, \sigma$-bond in the hydroxyl (O-H) group.
Total $\sigma$-bonds: $6 + 5 + 2 + 1 = 14$
Count the pi bonds ($\pi$-bonds):
$1 \, \pi$-bond in the C=O bond.
$3 \, \pi$-bonds in the C $\equiv$ C triple bond ($2 \, \pi$-bonds in the triple bond).
Total $\pi$-bonds: $1 + 3 = 4$
Therefore, the total number of bonds (sigma and pi) is:
$14 + 4 = 18$