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COMEDK2024ChemistrySome Basic Concepts of Chemistry

1.12 mL of gas is produced at STP by the action of 4.12 mg of alcohol, ROH , methyl magnesium iodide. The molecular mass of alcohol is

Options

  1. A16.0 ~g / mol
  2. B41.2 ~g / mol
  3. C82.4 ~g / mol
  4. D156 ~g / mol

Correct answer

C. 82.4 ~g / mol

Step-by-step solution

The complete reaction involved is, gathered ROH + CH ₃ MgI 1 mole CH ₄ + Mg ( OH ) I =22400 ~mL gathered 1.12 mL is obtained from 4.12 1.12 22400 mg =82.4 ~g Molecular mass of alcohol =82.4 ~g

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