art A- Multiple Choice the letter corresponding to the best answer in the blank

Question

art A- Multiple Choice the letter corresponding to the best answer in the blank after each question. Either equilibrium #1, #2, or both equilibria will apply to the next four questions: Equilibrium #1 2CrO42-(aq) yellow Cr2O,2(aq) orange + 2H'(aq) + H2O() Equilibrium #2 Cromaq) yellow Ba2+(aq) BaCrO4(s) pale yellow + 1. A few drops of HClag) are added to a solution of NazCrO). The solution is allowed to reach equilibrium. Then, six more drops of HCl(ag) are added. What will you observe when the second portion of HCl is added? the solution will remain unchanged the solution will become more orange a precipitate will form the solution will become more yellow (a) (c) (d) EQUILIBRIUM #2

Explanation / Answer

The answer b) chosen is correct for equilibrium 1, because when concentration of any species is altered in a equilibrium system, then the equilibrium is re established according to Le Chateliers principle.Also , according to this principle the increase in concentration of reactants shift the equilibrium towards product side. So, the colour of solution will become more orange.

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