stoichiometry

Introduction

The principle that chemical reactions occur by individual molecules, atoms or ions reacting with others to produce new ones. Thus relative quantities of chemical substrates & products canbe reduced to integer quantities of each chemical, when expressed in molecule/atom/ion or molar amounts.

i.e.

2 H+ + SO4= -> H2SO4 (1 SO4= & 1 H2SO4 is implied)