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Q. Calculate the number of 5.70m NaOH must be added to 666 ml of a buffer that contains .0205m C2H4O2 and .0260m C2H3NaO2 to increase the ph to 5.75?

Q. The solubility product of Gd(OH)3 is 1.8x10^-23. At what pH will Gd(OH)3 begin to precipitate If a solution is 0.010M in Gd3+ ion and the pH of the solution is slowly increased?

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