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Unformatted text preview: and aqueous carbon dioxide are reacted. If 68.2 g of ammonia are reacted with 105 g of carbon dioxide, 87.5 g of urea are produced. What is the limiting reactant, theoretical yield and percent yield? 7. In the generic chemical equation: A + B C, 25 g of A were reacted with 8 g of B. A was completely used up and 4 g of B remained. What was the limiting reactant? 8. Solid calcium carbonate is dissolved by aqueous hydrochloric acid. If 5.8 g of hydrochloric acid are used, how much calcium carbonate was used in the reaction? 9. In the generic chemical equation: 2A + B 3C, ∆ H = 240 kJ. If 3 mol A and 2.5 mol B are reacted, what is the limiting reactant? What is the heat associated with this reaction? 10. Identify the processes below as either endothermic or exothermic: a. Ice melting b. Gasoline burning c. The reaction that occurs in a chemical cold pack often used to ice athletic injuries...
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- Spring '09
- Aqueous hydrochloric acid