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Does anyone know how to do this??? Calculate the % yield

Does anyone know how to do this??? Calculate the % yield-example-1
User Okky
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1 Answer

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Answer:

Percentage Yield = 56.9% (to 3 significant figures)

Step-by-step explanation:

Firstly you need to calculate the amount of moles of Na used. Moles = Mass/Mr, so moles of Na = 1.72x10^-3/23. This gets you 7.47826087x10^-5 moles.

The mole ratio of Na:Na2O is 2:1 so the moles of Na2O will be the moles of Na divided by 2. This gets you 3.739130435x10^-5 moles.

Mass = Moles x Mr

The Mr of Na2O = 62

Mass = 3.739130435x10^-5 x 62 = 2.31826087x10^-3g

Percentage Yield = (Actual Yield / Theoretical Yield) x 100

Percentage Yield = (1.32x10^-3 / 2.31826087x10^-3) x 100

Percentage Yield = 56.93923481%

Percentage Yield = 56.9% (to 3 significant figures)

User Frank Fu
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