Why does gas remain dissolved for longer in a cold soft drink?
Answer and explanation
Correct answer: Gas solubility is higher at low temperature
Carbon dioxide is generally more soluble in a cold liquid than in a warm one. At lower temperature, gas molecules have less tendency to escape from the liquid, so the dissolved gas remains longer, especially while the bottle is sealed. Cooling does not normally turn the gas into a solid, and sugar or colour is not the governing explanation. Pressure also helps retain the gas.
Frequently asked questions
What is the correct answer to this question?
Gas solubility is higher at low temperature
Why is this the correct answer?
Carbon dioxide is generally more soluble in a cold liquid than in a warm one. At lower temperature, gas molecules have less tendency to escape from the liquid, so the dissolved gas remains longer, especially while the bottle is sealed. Cooling does not normally turn the gas into a solid, and sugar or colour is not the governing explanation. Pressure also helps retain the gas.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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