Chemical equation: Difference between revisions

A chemical equation (see an example below) consists of a list of reactants (the starting substances) on the left-hand side, an [[arrow (symbol)|arrow symbol]], and a list of products (substances formed in the chemical reaction) on the right-hand side. Each substance is specified by its [[chemical formula]], optionally preceded by a number called '''[[stoichiometric coefficient]]'''.{{efn|Not to be confused with a related quantity called [[stoichiometric number]].}} The coefficient specifies how many entities (e.g. [[molecule]]s) of that substance are involved in the reaction on a molecular basis. If not written explicitly, the coefficient is equal to 1. Multiple substances on any side of the equation are separated from each other by a [[plus sign]].

 

 

:{{chem2|2HCl + 2Na -> 2NaCl + H2}}