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MMLU / The equilibrium constant, Kc, for the dissociation of HI into hydrogen gas and…

Problem

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question

The equilibrium constant, Kc, for the dissociation of HI into hydrogen gas and iodine vapor is 21 at a certain temperature. What will be the molar concentration of iodine vapor if 15 grams of HI gas is introduced into a 12.0-L flask and allowed to come to equilibrium?

choices

  1. 4.58 mol/L
  2. 0.00687 mol L-1
  3. 4.4 × 10^-3 M
  4. 9.76 × 10^-3 M

subject

high_school_chemistry

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