5. When a phosphate group is found in water: a) The partially-negative oxygen atoms of the
water molecules surround the oxygen atoms of the phosphate group. b) The partially-positive
hydrogen atoms of the water molecules surround the oxygen atoms of the phosphate group. c)
The partially-positive oxygen atoms of the water molecules surround the oxygen atoms of the
phosphate group. d) Hydrophobic forces push the phosphate groups together to minimize their
disruption on hydrogen bonding between water molecules. e) There is more than one correct
answer above.
Solution
ANS:
b) The partially-positive hydrogen atoms of the water molecules surround the oxygen atoms of
the phosphate group.
Explanation:
In the water molecule two polar covalent bonds are present. Among this oxygen molecule had a
partial negative charge and both hydrogen atoms partial positive charge. The positive and
negative ends of the bond cause charge separation or a dipole. So water molecule had 2 polar
covalent bonds and 2 bond dipoles.
In phosphate group two oxygen molecules had partial negative charges, so the partially-positive
hydrogen atoms of the water molecules surround the oxygen atoms of the phosphate group..
5. When a phosphate group is found in water a) The partially-negati.pdf
1. 5. When a phosphate group is found in water: a) The partially-negative oxygen atoms of the
water molecules surround the oxygen atoms of the phosphate group. b) The partially-positive
hydrogen atoms of the water molecules surround the oxygen atoms of the phosphate group. c)
The partially-positive oxygen atoms of the water molecules surround the oxygen atoms of the
phosphate group. d) Hydrophobic forces push the phosphate groups together to minimize their
disruption on hydrogen bonding between water molecules. e) There is more than one correct
answer above.
Solution
ANS:
b) The partially-positive hydrogen atoms of the water molecules surround the oxygen atoms of
the phosphate group.
Explanation:
In the water molecule two polar covalent bonds are present. Among this oxygen molecule had a
partial negative charge and both hydrogen atoms partial positive charge. The positive and
negative ends of the bond cause charge separation or a dipole. So water molecule had 2 polar
covalent bonds and 2 bond dipoles.
In phosphate group two oxygen molecules had partial negative charges, so the partially-positive
hydrogen atoms of the water molecules surround the oxygen atoms of the phosphate group.
