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Chemical equilibrium — Question 101

Original QCE Vault practice · 1 mark

Q101 · Practice questionSimple familiar1 mark

QUESTION 101

Solid iodine and iodine vapour are present in a sealed tube at constant temperature. The colour of the vapour is constant. Which statement explains this observation?

(A)
Iodine particles no longer leave the solid.
(B)
The amount of solid equals the amount of vapour.
(C)
Sublimation and deposition occur at equal, non-zero rates.
(D)
All iodine has reached the same physical state.
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