HSC Chemistry Practice Questions - HSC Chemistry (NSW Higher School Certificate) Exam

For the equilibrium H2(g) + I2(g) 2HI(g), which expression correctly represents the equilibrium constant Keq?

[HI] / ([H2][I2]) [HI]^2 / ([H2][I2]) ([H2][I2]) / [HI]^2 2[HI] / ([H2] + [I2])

Correct Answer:

[HI]^2 / ([H2][I2])

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