When a bottle of a carbonated cold drink is opened, the gas comes out with a rapid fizz. According t — Chemical Equilibrium Chemistry Question
Question
When a bottle of a carbonated cold drink is opened, the gas comes out with a rapid fizz. According to Le-Chatelier's principle, this is primarily due to:
Answer: C
💡 Solution & Explanation
The equilibrium is $CO_2(g) \rightleftharpoons CO_2(aq)$. Opening the bottle equalizes high internal pressure with lower atmospheric pressure. The sudden decrease in pressure shifts the equilibrium backward, turning aqueous $CO_2$ into gaseous $CO_2$, creating a fizz.
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