Answer to Question #346579 in General Chemistry for Han

Question

How many grams of Fe2O3 will react with 18.97 grans of C in the REDOX reaction below? Show the solution

2Fe2O3 + 3C ------> 4Fe + 3CO2

Answer 1

M_r(Fe₂O₃) = 160 g/mol

M_r(C) = 12 g/mol

2Fe₂O₃ + 3C = 4Fe + 3CO₂

According to the above reaction, when

2mol (320 g) of Fe₂O₃ reacts, 3mol (36 g) of C reacts. We find how many grams of Fe₂O₃ react when 18,97 g of C reacts:

320 g Fe₂O₃ — 36 g C

X — 18,97 g C

X = 320 * 18,97 / 36 ≈ 168,6 g Fe₂O₃

AMSWER: 168,6 g Fe₂O₃