Question

A student working in lab is reacting calcium oxide with water by dropping lumps of calcium oxide into the distilled water.

CaO (s) + H₂O (ℓ) → Ca(OH)₂ (aq)

Which actions or changes can the student make to increase the number of effective collisions between CaO and H₂O?

Answer 1

In order to increase the number of effective collisions the student can:

- Add heat

- Decrease the amount of water

- Grind up the lumps of calcium oxide.