Question 38
Metals and their CompoundsSodium hydroxide should be stored in properly closed containers because it
- A.readily absorbs water vapour from the air
- B.is easily oxidized by atmospheric oxygen
- C.turns golden yellow when exposed to light
- D.melts at a low temperature
Show the answer and explanation
Answer: A (readily absorbs water vapour from the air)
Explanation
Sodium hydroxide is deliquescent: it absorbs water vapour (and carbon(IV) oxide) from the air and turns into a solution if left open.