For the reaction H₂(g) + I₂(g) ⇌ 2HI(g) at 721 K, the value of equilibrium constant Kc is 50. When the equilibrium concentration of both H₂ and I₂ is increased by 0.5 M, then the value of KC under the same conditions will be:
- A0.002.
- B0.2.
- C50.0.
- D50/RT.
✓ Correct answer: C
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