2. Calcium carbide, CaC2, is the raw material for the production of acetylene (used in welding torches). Calcium carbide is produced by reacting calcium oxide with carbon. Carbon monoxide is also produced in this reaction. When one mole of calcium carbide is formed, 464.8 kJ is absorbed (a) Write a thermochemical equation for this reaction.(b) Is the reaction exothermic or endothermic?(c) What is ΔH when 1.00 g of CaC2(s) is formed?
2. Calcium carbide, CaC2, is the raw material for the production of acetylene (used in welding torches). Calcium carbide is produced by reacting calcium oxide with carbon. Carbon monoxide is also produced in this reaction. When one mole of calcium carbide is formed, 464.8 kJ is absorbed (a) Write a thermochemical equation for this reaction.(b) Is the reaction exothermic or endothermic?(c) What is ΔH when 1.00 g of CaC2(s) is formed?
Chemistry: An Atoms First Approach
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Author:Steven S. Zumdahl, Susan A. Zumdahl
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Chapter7: Chemical Energy
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2. Calcium carbide, CaC2, is the raw material for the production of acetylene (used in welding torches). Calcium carbide is produced by reacting calcium oxide with carbon. Carbon monoxide is also produced in this reaction. When one mole of calcium carbide is formed, 464.8 kJ is absorbed
(a) Write a thermochemical equation for this reaction.
(b) Is the reaction exothermic or endothermic?
(c) What is ΔH when 1.00 g of CaC2(s) is formed?
(d) How many grams of carbon must react to produce 3.03x103 kJ of heat?
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