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NEET2018ChemistrySome Basic Concepts of ChemistryActual

A mixture of 2 . 3   g formic acid and 4 . 5   g oxalic acid is treated with concentrate H 2 SO 4 . The evolved gaseous mixture is passed through KOH pellets. What will be the weight in grams of the remaining product at STP ?

Options

  1. A2 . 8
  2. B3 . 0
  3. C1 . 4
  4. D4 . 4

Correct answer

A. 2 . 8

Step-by-step solution

For gases n ∝ V : CO 2 is absorbed by KOH . So the remaning product is only CO . moles of CO formed from both reactions = 1 20 + 1 20 = 1 10 Left mass of CO = moles × molar mass = 1 10 × 28 = 2 .8   g

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