Question

Which one of the following statements about water is FALSE?

• A. Water can act both as an acid and as a base.
• B. There is extensive intramolecular hydrogen bonding in the condensed phase.
• C. Ice formed by heavy water sinks in normal water.
• D. Water is oxidized to oxygen during photosynthesis.

Answer 1

Answer: (B)

There is extensive intramolecular hydrogen bonding in the condensed phase.

Water is neutral. It acts both as a base and as an acid.

There is extensive intermolecular hydrogen bonding in the condensed phase.

The density of heavy water is more than the density of water, therefore, $D_{2}O$ sinks in normal water.

Reaction of photosynthesis:

$6C{O}_2+6H_{2}O⟶C_6{H}_{12}{O}_6+6O_2$