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Post-UTME Chemistry 2019 Objective — Question 6

Question 6 of 20 from the Post-UTME Screening (Post-UTME) Chemistry 2019 Objective paper, with the correct answer and a full explanation.

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In the preparation of carbon monoxide by heating ethanedioic acid with concentrated sulphuric acid, the concentrated sulphuric acid acts as

  • A. oxidizing agent
  • B. reducing agent
  • C. dehydrating agentCorrect
  • D. reaction medium

Explanation

Concentrated H2SO4 removes water from ethanedioic (oxalic) acid in this reaction, acting as a dehydrating agent, producing CO, CO2 and H2O.

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