Essential Chemistry for IGCSE - Chemical Reactions (Section 4 - No. 9)
Which of the following is an example of a system at equilibrium?
A rocket launching into space.
Water boiling in an open container.
Ice melting in a sealed container at 0°C.
A car accelerating on a highway.
Explanation
Ice melting in a sealed container at 0°C is in equilibrium because the rate of melting equals the rate of freezing.
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