Bismuth oxide reacts with carbon to form bismuth metal: bi2o3 (s) + 3c (s) → 2bi (s) + 3co (g) when 689 g of bi2o3 reacts with excess carbon, (a) how many moles of bi form? 2.957 mol bi (b) how many grams of co form? g co

Using the answer from the first part, we know that 2.957 moles of bismuth have formed. Moreover, the molar ratio between bismuth and carbon monoxide is:

2 : 3

Using the method of ratios,

2 : 3

2.957 : CO

CO = (3 * 2.957) / 2

CO = 4.4355

4.436 moles of carbon monoxide will be formed