The Kc has following units for the reaction H2(g) + I2(g) ⇋ 2HI (g)

Correct answer: D. No unit

  • A. mol3dm-6
  • B. moldm-3
  • C. mol-3dm6
  • D. No unit

Explanation

A, B and C are incorrect since the given units aren't correct according to the equationD is correct since In equation both sides moles are equal so Kc has no unit.

This question appeared on the UHS MDCAT 2010 paper, which you can sit online with every answer explained.

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