Question

Sodium reacts with cold water vigorously but iron only react with steam. It is because:

• A. Iron is inert
• B. Sodium only reacts with water.
• C. Sodium is highly reactive and iron needs more energy to react with water.
• D. Iron is highly reactive than that of sodium.

Answer 1

The correct option is C

Sodium is highly reactive and iron needs more energy to react with water.

Sodium is highly reactive element, hence it reacts immediately with water while iron needs more activation energy to react hence it reacts with steam. Steam is gaseous state of water with more energy than water.