And you have to figure out the percentage of hydrogen?How do you calculate the percentage yeild when you are given the sample of hydrocarbon and grams of water?
Percentage Yield = (Actual Yield / Theoretical Maximum Yield) * 100
Use this equation to work it out.How do you calculate the percentage yeild when you are given the sample of hydrocarbon and grams of water?
All the Hydrogen in the water will have come from the hydrocarbon. The percentage of Hydrogen in water is determined by the atomic weights of the atoms. The atomic weight of Hydrogen is 1 and Oxygen is 16. % H in H2O = 2*1 / (2*1 + 16) = 2/18 = 1/9 = 11.11%.Multiply the percentage times the weight of water. This will give the total mass of the Hydrogen in the hydrocarbon. Then divide the weight of hydrogen by the weight of the hydrocarbon sample. This gives the percentage of Hydrogen in the hydrocarbon sample. Any percentage yield is impossible to calculate unless the actual identity of the hydrocarbon is known. Then a balanced chemical equation can be formulated and the amounts of reactants and products calculated.
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