The Hydrolysis of the Hydrated Pb ion PboH (aq) + H200SolutionP.pdf

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The heights(in feet) at timet(in seconds) of a silver dollar dropped from the top of the a monument is given by the following expression. Solution s(t) = -16t^2 + 547 (a) s(2) = 483 m s(3) = 403 m Average velocity for [2,3] = 403 - 483 = -80 m/s b) s\'(2) = 547 - 32t = 483 m/s s\'(3) = 547 - 32(3) = 451 m/s c) t = sqrt(547/16) = 5.847 s d) s\'(5.847) = 359.896 m/s.

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The Hydrolysis of the Hydrated Pb ion PboH (aq) + H200
Solution
Pb(OH)2 turns into an insoluble precipitate as the reaction moves forward.The solid precipitate is
considered to be out of the solution(the system), so the reaction moves forward and Pb2+
concentration in the solution decreses.
When something soluble becomes insoluble, it is called a precipitate and the process/reaction is
called precipitation reaction.
H+ is part of the product side.We know an reaction goes to other side if a reagent of one side is
added.That is some of Pb(OH)2 precipitate will convert back to PbOH+(aq).
As H+ increases pH decreases, so as pH increases H+ decrases and reaction moves in forward
direction that is more of precipitate is formed.Opposite happens if pH decreases.
Comment if any doubt.

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