E-Mail : support@onlinemathsguru.com
how many moles of iron oxide is required to produce 10 moles of carbon dioxide in the reaction 2Fe2O3 + c= Fe + 3CO2
Solution
Let’s just take this step by step.
Step 1: Understand the vocabulary. Mol is 6.022 x 1023 pieces of a substance or molecule. It is similar in concept to a dozen.
Step 2: Look at the equation and mark what you need. Remember Iron Oxide is Fe2O3 and Carbon Dioxide is CO2.
2Fe2O3 + C= Fe + 3CO2 This is what the reaction is giving you but you need 10 mols (60.22 x 1023)
So: if 2 Iron Oxides = 3 Carbon dioxides, then 2 mols of iron oxide = 3 mols of carbon dioxide.
Step 3: Set up an equivalency and solve.
2 Fe2O3 =. x.
3 CO2 10 CO2
So, 2 x 10 = 20/3 = 6 and 2/3 mols.