Question

From the balanced chemical equations listed below, which equation best expresses the following word equation: The reversible reaction in which solid calcium carbonate yields solid calcium oxide plus carbon dioxide gas?

CaCO3 (s) arrow CaO (s) + CO2 (g)

CaCO3 (s) arrow that points both right and left CaO (s) + CO2 (g)

CaO (s) + CO2 (g) arrow that points both right and left CaCO3 (s)

CaClO3 arrow that points both right and left CaClO (s) + O2 (g)

@hartnn @mathstudent55 @TheSmartOne @Jadeishere @Donblue22 @welshfella @sweetburger @Nnesha @JoannaBlackwelder @ganeshie8 @JFras

Answer 1

A reversible reaction looks like this;


So arrows pointing left and right. Canceling out the first one

Answer 2

CaCO3 is Calcium Carbonate
CO2 is Carbon Dioxide
CaO is Calcium Ocide

Answer 3

We can count out the last one because it has to be a solid, and specified as so because it can be a liquid without (s) next to it.

So leaving us with 2 and 3

Answer 4

okay

Answer 5

Do you have any guesses uping @Jadeishere 's info?

Answer 6

Equilibrium reactions are written with the compound(s) that come first in the statement on the left as reactants and what the reaction yields on the right.