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.
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A reversible reaction proceeds in both forward and backward directions, so reactants and products continue changing until dynamic equilibrium is established. The topic covers the meaning of equilibrium, the equality of forward and reverse rates, and how concentration, pressure and temperature disturb equilibrium, which is separate from the rate at which equilibrium is reached.
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