Ethylene (C₂H4) reacts with molecular hydrogen according to the equation below. C2H4 (g) + H2 (g) --> C2H6 (g) If you start with equal masses of both reactants, which of the statements below is true? a. The ethylene is the limiting reactant. b. The hydrogen is the limiting reactant. c. There is no limiting reactant - both substances are present in the necessary ratio for them to react completely. d. We cannot determine the limiting reactant without first knowing the exact masses of each substance.

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Q: limiting reactant?

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".