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?
Given more time, the reaction would have gone to completion.
In the balanced chemical equation describing this reaction, A and D should have
different stoichiometric coefficient.
In the balanced chemical equation describing this reaction, the stoichiometric
coefficient of A must be twice that of B.
Reactant B was the limiting reagent in this experiment and this explains why no additional D is being produced after 4 min.
None of the above statements is accurate.
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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
Which of the following statements is always true at equilibrium?
Choose which statement completes the following sentence to make it false. Once a dynamic equilibrium is reached ----------------