Chem 1211 Notes 10 23 18 Identifying Reactions Not all gas forming are classified as gas forming reactions A chemical over an arrow in a reaction is typically a catalyst which means it s not consumed but helps speed up the reaction such as pollutants like carbon dioxide speeding up the decomposition of ozone Always check equations to make sure they are balanced Solutions are gas forming so if there is water on the reactant side it is a solution and is gas forming Hydrocarbon plus diatomic oxygen yields carbon dioxide and water Two aqueous solutions producing carbon dioxide is gas forming We have a bicarbonate so that s acid base Balancing Equations Law of conservation of matter matter cannot be created or destroyed it can only be arranged to form new stuff What is true about balancing and using chemical equations You can not always calculate the total mass of products by adding the masses of the reactants because of limiting reactants You can only do this is you know everything is 100 efficient
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