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Equilibrium Is Reached in a Reversible Reaction When the Rate

Question 146

Multiple Choice

Equilibrium is reached in a reversible reaction when the rate of the forward reaction equals the rate of the reverse reaction.  The graph shows the changes in concentration during the formation of HI(g) from a mixture of H<sub>2</sub>(g) and I<sub>2</sub>(g) .  If the measurement is taken at equilibrium, how many moles of HI(g) are present in a 750 mL sample of the reaction mixture? A) 0.8 mol B) 1.9 mol C) 4.5 mol D) 6.0 mol Equilibrium is reached in a reversible reaction when the rate of the forward reaction equals the rate of the reverse reaction.  The graph shows the changes in concentration during the formation of HI(g) from a mixture of H2(g) and I2(g) .  If the measurement is taken at equilibrium, how many moles of HI(g) are present in a 750 mL sample of the reaction mixture?


A) 0.8 mol
B) 1.9 mol
C) 4.5 mol
D) 6.0 mol

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