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Examples for

Chemical Reactions

Chemical reactions, the transformation from one molecular structure to another, are ubiquitous in the world around us. Everything from internal combustion engines and complex manufacturing plants to geological processes and life itself depend on chemical reactions. Use Wolfram|Alpha to balance chemical equations, determine reaction stoichiometry and predict products.

Equation Balancing

Use Wolfram|Alpha to find the right coefficients to balance a chemical reaction.

Balance a chemical equation:

Al + O2 -> Al2O3

hydrochloric acid + calcium hydroxide -> calcium chloride + water

octane + O2 -> water + CO2

Equilibrium

Build expressions necessary for modeling chemical equilibria.

Learn to build an equilibrium constant:

equilibrium constant CoO(s) + CO(g) -> Co(s) + CO2(g)

PbCl2(s) -> lead(2)(aq) + Cl-(aq) equilibrium constant

Assemble a reaction quotient:

reaction quotient nitrogen(g) + oxygen(g) -> NO(g)

NaOH(aq) + HCl(aq) -> water (l) + NaCl (aq) reaction quotient

Reaction Stoichiometry

When you specify the amount for one or more reactants or products, Wolfram|Alpha can compute reaction properties such as theoretical yield, percent yield and limiting reactant.