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Q.

. ____ grams of 3-Hydroxy propanal (MW = 74) must be dehydrated to produce 7.8 g of acrolein (MV = 56) (C3H4O) if the percentage yield is 64. (Round off to the Nearest Integer).
[Given : Atomic masses : C : 12.0u, H : 1.0u, O : 16.0u]

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answer is 16.

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Detailed Solution

 

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7.856=0.14 % yeild = 78/56x× 100=56 X=7.8×10056×64=78056×64mol W reactant =78056×64×74=16.11g

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