Question

areated water bottles are kept under water during summer,
why?

Answer 1

In summer, the solubility of the gas in water is likely to decrease because the rise in temperature decreases the solubility. Thus, in summer, more of gas will be present above the liquid surface in the glass bottle. ... To avoid this, the bottles are kept under water.

Answer 2

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In summer, the solubility of the gas in water is likely to decrease since rise in temperature decreases solubility. Pressure becomes too high for the glass bottle to with stand and so explodes. To avoid this, bottles are kept under water.

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