Flo Predovic
Jan 23, 2025
If 5.0 moles of C3H8 react, how many molecules of water are formed?
If 5.0 moles of propane (C3H8) undergo complete combustion, how many molecules of water (H2O) are produced as a result of the reaction? Could you please provide a detailed explanation of the stoichiometry involved in this calculation?
2 Answers
Jan 12, 2025
The reaction of propane with oxygen is C3H8 + 5 O2 —-> 3 CO2 + 4 H2O
Therefore for every atom of C3H8, four atoms of water are produced.
Therefore 5 moles of C3H8, 5 x 4 moles of water are produced
On the basis of Avogadro’s constant, 1 mole of water contains 6.02214129 x 10^23 molecules
Therefore 5 x 4 = 20 moles
20 moles of water contains 20 x 6.02214129 x 10^23 molecules
= 120.4428158 x 10^23 = 1.204428158 x 10^25 molecules of water
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