Intro to Stoichometry. Mole Ratio Predict the products and balance the following equation: Li + O 2 

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Presentation transcript:

Intro to Stoichometry

Mole Ratio

Predict the products and balance the following equation: Li + O 2 

Predict the products and balance the following equation: 4 Li + O 2  2 Li 2 O 4 moles of Li react with 1 mol of O 2 to produce 2 moles of Li 2 O

4 Li + O 2  2 Li 2 O If 1.83 mol of Li reacted, how many moles of O 2 reacted? What is the mole ratio of Li to O 2 ? From the balanced reaction: 4 mol Li or 1 mol O 2 4 mol Li

4 Li + 1 O 2  2 Li 2 O If 1.83 mol of Li react, how many moles of O 2 react? ? Mol O 2 = 1.83 mol Li x 1 mol O 2 = mol O 2 14 mol Li This is called the “Mole Ratio”

4 Li + O 2  2 Li 2 O If 1.83 mol of Li reacted, how many moles of Li 2 O will be produced? ? mol Li 2 O= 1.83 mol Li x 2 mol Li 2 O = mol Li 2 O 14 mol Li “Mole Ratio” between Li 2 O and Li

Predict the products and balance the following equation: FeS 

Predict the products and balance the following equation: 8 FeS  8 Fe + S 8 1.If 4.18 mol FeS decomposes, how many moles of Fe are produced? 4.18 mol Fe 2.How many moles of sulphur are produced? mol S

Predict the products and balance the following equation: Lead reacts with copper(I) sulphate. Pb + Cu 2 SO 4 

Predict the products and balance the following equation: Pb + Cu 2 SO 4  PbSO 4 + 2Cu 1.If 9.78 mol of Cu is produced, how many moles of Pb reacted? 4.89 mol Pb 2.If 3.45 mol Cu 2 SO 4 reacts, how many moles of PbSO 4 are produced? 3.45 mol PbSO 4