The graph below shows the rate of the forward (top curve) and reverse (bottom curve) over time
Which of the following statements are CORRECT
i. After point B the forward and reverse rates are equal because [products]=[reactants]
ii. The rate of the forward reaction decreases because reactant concentration is decreasing
iii. The rate of the backward reaction is increasing because product concentration is increasing
iv. The rate of the forward reaction is constant, the reverse reaction speeds up to match it, establishing equilibrium
All of them
None of them
ii and iii
i and iv
i, ii, iii
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Indicate the CORRECT statement regarding concentrations at equilibrium:
Dynamic equilibria
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 ----------------
Chemical Equilibria
Consider this balanced chemical reaction and the molecular representation for both of the next two questions: 2AB(g)⇌A2(g)+B2(g)2AB(g)⇌A_2(g)+B_2(g)2AB(g)⇌A2(g)+B2(g)
Choose which statement completes the following sentence to make it false.
Once a dynamic equilibrium is reached ___________
The digestion of some high-protein foods such as red meat, beans, lentils, and shell-fish, releases uric acid, HC5H3N4O3(aq), which ionizes into hydrogen ions, H+(aq) and urate ions, C5H3N4O3-(aq) in the bloodstream. People whose kidneys do not function properly cannot excrete urate ion sufficiently quickly, leading to an increased concentration of urate in the blood. This sometimes leads to a painful form of arthritis known as gout, characterized by the formation of tiny needle-like crystals of sodium urate, NaC5H3N4O3(aq), in joints and tissues according to the equation:
NaC5H3N4O3(s) ⇌ Na+(aq) + C5H3N4O3-(aq)
a) Suppose you are a nutritionist. What advice could you give to your patients who suffer from gout? Explain why the advice would be effective [2]