Exams › NEET › Chemistry

For the equilibrium, \( \boldsymbol{H}_{2} \boldsymbol{O}(\boldsymbol{s}) \Leftrightarrow \boldsymbol{H}_{2} \boldsymbol{O}(\boldsymbol{l}) \) which of the following is true?

1. The pressure changes do not affect the equilibrium.
2. The amount of ice that melts is more, if the pressure on the system is increased
3. The amount of liquid that freezes is more, if the pressure on the system is increased.
4. At low pressure, the nature of equilibrium changes to forward direction

Correct answer: The pressure changes do not affect the equilibrium.

Solution

For the equilibrium between ice and liquid water, pressure has essentially no effect because the two phases are both condensed and their volume difference is very small. In this context, the equilibrium is treated as pressure-independent, so the correct statement is that pressure changes do not affect it.

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