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In the industrial preparation of acrylic acid, there are two main steps. In the first step, calcium carbide (CaC₂) reacts with water to produce acetylene (C₂H₂) and calcium hydroxide: CaC₂(s)+2H2O(g)→C₂H₂(g)+Ca(OH)₂(s) In the second step, acetylene (C₂H₂), carbon dioxide (CO₂), and water react to form acrylic acid: (CH₂CHCOOH): 6₂2H₂(g)+3CO₂(g)+4H₂O(g) → 5CH₂CHCOOH(g). Given that the yield of the first step is 85% and the yield of the second step is 89%, calculate the mass of calcium carbide required to produce 5.0 kg of acrylic acid.
Sagot :
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