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In the reaction below, 1.000 × 103 g LiOH is combined with 8.80 × 102 g CO2. The reaction produces 3.25 × 102 g H2O in an experiment.

CO2 + 2LiOH → Li2CO3 + H2O
theoretical yield

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indrawboy

mol LiOH = 1000 :  23.95 g/mol = 41.75

mol CO₂ = 880 : 44.01 g/mol = 19.995

CO₂ + 2LiOH → Li₂CO₃ + H₂O

mol : coefficient

CO₂ = 19.995 :  1 = 19.995

LiOH = 41.75 : 2 = 20.875

CO₂ = limiting reactant (smaller)

mol Li₂CO₃ based on limiting ractant

mol H₂O = mol CO₂ = 19.995 (same coefficient)

mass H₂O = theoretical yield = 19.995  x 18 g/mol = 359.91 g

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