Answer to Question #156594 in General Chemistry for faith hurt

Question

Using your target mass of CO2, calculate the mass of citric acid monohydrate, C6H8O7·H2O, you would need to produce it. The target mass is 0.50g and i need to solve it with a three step bracket.

Answer 1

you can make three steps bracket like this

(CO₂)₃ (C₄H₈O) (H₂O)

carbon di oxide mass is given = 0.50g

no. of moles of CO₂ = 0.50/44 = 0.0113 moles

since we've 3 units , so total CO₂ moles = 0.0340 moles

Mass of C₄H₈O unit = 0.0340x 72 = 2.45 g

Mass of H₂O unit = 0.0340 x 18 = 0.612 g

Total mass = 0.50+ 2.45+ 0.612 = 3.562 grams