Diarsenic trioxide reacts with water to form arsenous acid (H3AsO3). a. Write a balanced equation for the reaction described above. b. Identify the reaction type (combustion, single replacement, double replacement, synthesis or decomposition) c.For the reaction of 68.8 g of diarsenic trioxidewith 18.8 g water, calculate the theoretical yield of arsenous acid. d. Identify the limiting reactant. e. Calculate how many grams of excess reactant remain at the end of the reaction: f. If 64.4g of arsenous acidare actually formed in the lab, calculate the percent yield for the reaction.

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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".