Question

Soda bottles are made of thick glass so that they can withstand an increase in:
(A) pressure during summer
(B) temperature during summer
(C) viscosity
(D) potential energy

Answer 1

Hint:Soda waters are carbonated water with some flavour or sweetener. The distilled water is infused with carbon dioxide under pressure and is mixed with some food-grade flavours to make it a refreshing drink, especially in summer.

Complete step by step answer:
Soda bottles contain the carbonated water under pressure. The distilled water is infused with carbon dioxide (which is, of course, food-grade) under pressure along with some flavours, minerals, sweetener and even sometimes food colours to give it an attractive look and taste.
The carbon dioxide gradually gets dissolved in the water to make it carbonated. The storage of the bottles at a lower temperature helps in the dissolving process. The undissolved carbon dioxide remains in the empty space of the bottle, and even appears as bubbles inside the liquid.As carbon dioxide has low solubility in water, it must be infused with the liquid under high pressure to achieve the desired solute concentration. So, there is a high chance that when these soda bottles become exposed to the warmer temperature, the dissolved gas will expand creating pressure on the wall of the bottle, making it burst open. So, to avoid such situations, the walls of the bottles are made thicker.Therefore, soda bottles are made of thick glass so that they can withstand an increase in pressure in summer and option (A) is correct.

Note:The presence of dissolved carbon dioxide under pressure can be observed while opening a soda bottle which makes a ‘fizz’ or ‘pop’ sound. The excess carbon dioxide, which is not dissolved in the liquid, tries to gush out of the bottle as soon as it finds an opening.