# Solving problems that mix equilibrium ideas with gas lawsWhen limestone (solid CaCO) is heated, it decomposes into lime (solid CaO) and carbon dioxide gas. This is an extremely useful industrial process of greatthe lime absorbs CO, from the air and turns back into hard, durableantiquity, because powdered lime mixed with water is the basis for mortar and concretelimestone.Suppose some calcium carbonate is sealed into a ekiln of volume 600. L and heated to 820.0 °C. When the amount of CaCO, has stopped changing, it isfound that 5.36 kg have disappeared.Calculate the pressure equilibrium constant K this experiment suggests for the equilibrium between CaCO, and CaO at 820.0 °C. Round your answer to 23Psignificant digits.Note for advanced students: it's possible there was some error in this experiment, and the value it suggests for K, does not match the accepted value.x10pCheckExplanationPrivacy2019 McGraw-Hill Education. All Rights Reserved. Terms of UseII

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Calculate the pressure equal. Equilibrium constant KPS experiment suggest for the equilibrium between CAC03 and see a show at 820.0 Celsius. Round answer to two sig figs.

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Step 1

The balanced chemical equation for the reaction is given below.

Step 2

Number of mol of CaCO3 decomposed = given mass / molecular mass = 5360 g /100.0869 g/mol = 53.55 mol

According to the equation the the number of mol of CO2 formed after the decomposition of 1 mol of CaCO3 is 1 mol....

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### Equilibrium Concepts 