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MHT CET202519 Apr 2025Morning ShiftChemistrySome Basic Concepts of ChemistryActual

In a chemical reaction, sum of formula weight of all reactants is 274 u and atom economy is 50 % , calculate formula weight of desired product?

Options

  1. A137 u
  2. B274 u
  3. C167 u
  4. D254 u

Correct answer

A. 137 u

Step-by-step solution

Given a reaction's total formula weight is 274 u and its atom economy is 50 % , the formula weight of the desired product can be found from the atom economy formula. Atom economy is defined as formula weight of desired product sum of formula weights of all reactants 100 % , which becomes 50 % = X 274 100 % . Dividing both sides by 100 % gives 0.50 = X 274 , so X = 0.50 274 . X = 137 The desired product has a formula weight of 137 u , corresponding to answer choice A.

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