A student writes the following equilibrium expression for the decomposition of…
CHEMISTRY · Subjective · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)
Problem
A student writes the following equilibrium expression for the decomposition of calcium carbonate:
CaCO3(s)⇌CaO(s)+CO2(g)
Student’s expression: Kc=[CaCO3][CaO][CO2]
Identify the error in the student’s expression and write the correct Kc expression.