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Chemistry · Equilibria involving physical processes: Solid-liquid, liquid-gas, gas-gas and solid-gas equilibria, Henry's law, General characteristics of equilibrium involving physical processes

For the equilibrium, \Leftrightarrow \boldsymbol{H}_{2} \boldsymbol{O}(\boldsymb

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

  • A. The pressure changes do not affect the equilibrium.
  • B. The amount of ice that melts is more, if the pressure on the system is increased
  • C. The amount of liquid that freezes is more, if the pressure on the system is increased.
  • D. At low pressure, the nature of equilibrium changes to forward direction

Step-by-step solution

For the equilibrium H2O(s) ⇌ H2O(l), ice has a lower density than liquid water. According to Le Chatelier's principle, increasing pressure shifts the equilibrium towards the phase with smaller volume (higher density), i.e., liquid water. Thus, more ice melts.
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