During the sunnner vacation, a chemistry laboratory assistant stored the chemicals in their respective bottles.After a few months it was observed that the lids of the bottles in which sodium hydroxide was stored was struck tight, He went to a lecturer for finding the solution for this problem.What solution could be suggested by the lecturer

During the sunnner vacation, a chemistry laboratory assistant stored t

1.	During the sunnner vacation, a chemistry laboratory assistant stored the chemicals in their respective bottles.After a few months it was observed that the lids of the bottles in which sodium hydroxide was stored was struck tight, He went to a lecturer for finding the solution for this problem.What solution could be suggested by the lecturer
Answer» SOLUTION :Sodium hydroxide on being EXPOSED to air reacts with the `CO_2` present in the air to FORM sodium carbonate.This solidifies and the lid gets stuck DUE to this.The lids can be REMOVED by using dilute acid with the help of cotton.