When solid NH₄Cl is added to water at 25 °C

CHEMISTRY · Subjective · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)

Problem

When solid NH₄Cl is added to water at 25 °C, the temperature of the solution drops and eventually stabilizes while some undissolved solid remains. Using energy considerations, determine whether the system is in dynamic or static equilibrium at the moment the temperature and concentrations stop changing, and briefly explain your reasoning.

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