From the number of moles of H2O and CO2 produced, determine the number of moles

Question

From the number of moles of H2O and CO2 produced, determine the number of moles of H atoms and C atoms in the sample.

H20 moles - 0.413

CO2 moles - 0.317

To calculate the moles of H atoms, you take the moles of H2O you calculated above and multiply by the mole ratio of the number of moles of H in 1 mole of H2O. For example, there are 2 moles of H in 1 mole of H2O, so you will use this as a conversion factor. To calculate the moles of C atoms, you will multiply by the mole ratio of the number of moles of C in 1 mole of CO2.

Moles of H atoms - ? moles

Moles of C atoms - ? moles

Explanation / Answer

Solution :-

mole ratio of the C to CO2 is 1 :

therefore moles of C = 0.317 mol CO2 * 1 mol C / 1 mol CO2 = 0.317 mol C

Mole ratio of the H to H2O is 2 : 1

therefore moles of H = 0.413 mol H2O * 2 mol H / 1 mol H2O = 0.826 mol H

therefore

moles of H = 0.826 moles

moles of C = 0.317 moles

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