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Equilibrium
Question
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Explain why the gas fizzes out (bubbles out) when a soda water bottle is opened?

Answer

In soda water bottle, CO2 gas is dissolved in water only under pressure. As soon as the bottle is opened, the pressure inside the bottle tends to decrease the atmospheric pressure, so the solubility decreases. The dissolved gas escapes from the bottle all of a sudden resulting in fizz. 

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Some More Questions From Equilibrium Chapter

Give an example from daily life in which there is gas solution equilibrium?

A crystal of common salt of a given mass is kept in its aqueous solution. After 24 hours, its mass remains the same. Is the crystal in equilibrium with the solution?

What is the role of forward and backward reactions at equilibrium of a reversible reaction?

What is a forward reaction?

What condition favours a reversible reaction?

What is a backward reaction?

What type of equilibrium is attained in a reversibe chemical change?

What is meant by a system at dynamic equilibrium?