Which of the following statements is always true at equilibrium?
The amounts of products and the amounts of reactants are equal.
There is no observable change in concentrations because reaction has stopped.
The rate of the forward reaction and the rate of the reverse reaction are equal.
The concentration of at least one of the compounds in the reaction is zero.
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Equilibrium plots
For the following equilibrium reaction, which of the following plots of concentration vs. time could be correct?
2SO2(g)+O2(g)⇌2SO3(g)KC≈102SO_2(g) + O_2(g) ⇌ 2 SO_3(g) \qquad \qquad K_C ≈ 102SO2(g)+O2(g)⇌2SO3(g)KC≈10
Equilibrium: Graph
A new experiment, for which the balanced chemical equation is unknown, was performed in the lab.
aA(aq)+bB(aq)⇄dD(aq)aA(aq)+bB(aq)\rightleftarrows dD(aq)aA(aq)+bB(aq)⇄dD(aq)
The concentrations of the different species (A, B and D) were monitored and plotted as a function of time, as shown below. Which of the following statements concerning this reaction is true?
Equilibrium
Choose which statement completes the following sentence to make it false. Once a dynamic equilibrium is reached ----------------