Why is glass stoppers of caustic soda solutions get stuck in the bottles
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NaOH bottle is not kept open in labs nor is NaOH stored in bottles with glass stoppers. NaOH is hygroscopic. It reacts with CO2 from air to Na2CO3 (also NaHCO3) by the reaction: 2NaOH(aq) + CO2(g) -> Na2CO3(s) + H2O(l).
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