Calcium carbonate decomposes to form calcium oxide and carbon dioxide, like this: caco3(s)→cao(s)+co2(g)at a certain temperature, a chemist finds that a 9.0l reaction vessel containing a mixture of calcium carbonate, calcium oxide, and carbon dioxide at equilibrium has the following composition: compound amountcaco3 25.3 gcao 14.9 gco2 33.7 gcalculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.

its first and third is your answer i did the qustion the fourth isnt right

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.