Stoichiometric Basic Calculations – Fundamentals and Applications
How it works
Stoichiometry deals with the quantitative relationships between reactants and products of chemical reactions. It uses the concepts of mole, molar mass, mass, number of particles and volume (for gases) to calculate how much of a substance is needed or produced. The chemical equation gives the numerical ratio of the substances. Conversion is carried out via the molar mass (g/mol) or the molar volume (for gases, 22.4 l/mol under standard conditions).
To calculate stoichiometric quantities, use the chemical equation, the molar mass and, if necessary, the molar volume to convert between mass, amount of substance (mole), number of particles and volume (for gases).
An example
How many moles of water are produced by the complete reaction of 18 g of hydrogen (H₂) with sufficient oxygen? (M(H₂) = 2 g/mol, reaction equation: 2 H₂ + O₂ → 2 H₂O)
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50 Exercises
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: Chemistry. The topic assignment may vary by federal state.