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Chemistry - Mole Concept Question with Solution | TestHub

ChemistryMole ConceptLaws of Chemical CalculationsMedium2 minQB

ChemistryMediummultiple choice

Select the correct statement -

Options:(select one or more)

Answer:

B, D

Solution:

Molar Masses: Hexamethylenediamine = $116 g / m o l$ , Adipic Acid = $146 g / m o l$ , Dimer = $244 g / m o l$ , and Nylon-6,6 monomer unit = $226 g / m o l$ .

For Option B: $610 g$ dimer is $\frac{610}{244} = 2.5 m o l es$ ; with a $50%$ yield, it requires $\frac{2.5}{0.50} = 5 m o l es$ of Adipic acid, which equals $5 \times 146 = 730g$ (Correct).

For Option D: $1.13 k g (1130 g)$ Nylon-6,6 is $\frac{1130}{226} = 5 m o l es$ of polymer units.

Dimer Required: With a $70%$ yield, the required moles of dimer is $\frac{5}{0.70} \approx 7.143 m o l es$ , which equals $7.143 \times 244 = 1742.9g$ (Correct).

Stream:JEESubject:ChemistryTopic:Mole ConceptSubtopic:Laws of Chemical Calculations

⏱ 2mℹ️ Source: QB

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