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, explore iconic reactions 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

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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.

Find the required amount of reactants:

benzene + nitronium -> 0.02 mols nitrobenzene + hydrogen ion

copper(II) carbonate -> 1.500 kg copper(II) oxide + CO2

Determine the theoretical yield:

22g NaOH + 16g MgCl2 -> Mg(OH)2 + NaCl

Cl2 + 10.0 g Na -> NaCl

Compute the percent yield:

0.2 mol CH4 + O2 -> 7 mL H2O + CO2

0.4031 g Na2C2O4 +1.481 g UO2(NO3)2 + H2O -> 1.073 g UO2(C2O4)(H2O)3 + NaNO3

percent yield m_a=5.12 g, m_t=7.94 g

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