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QUESTION 29 MgCl2 are added dropwise to a 1.2 M NaF solution. The minimun concentration of MgCl2 needed to to initiate a precipitate of magnesium fluoride is x 109 M. [Ksp(MBF2) = 6.9 x 10-91 MGF2(s) Mg2*(aq) + 2F(aq)

QUESTION 29 MgCl2 are added dropwise to a 1.2 M NaF solution. The minimun concentration of MgCl2 needed to to initiate a precipitate of magnesium fluoride is x 109 M. [Ksp(MBF2) = 6.9 x 10-91 MGF2(s) Mg2*(aq) + 2F(aq)

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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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QUESTION 27 What is the pH of a buffer solution that is made of 0.25 M benzoic acid (C6H5CO2H) and 0.15 M sodium benzoate (C6H5COONA)? (Ką = 6.5 × 10-3 for benzoic acid) C6HSCO2H(aq) + H20(aq) 2 C6H5CO0'(aq) + H3O*(aq) QUESTION 28 A 20.00-mL sample of 0.3000 M HBr is titrated with 0.15 M NAOH. What is the pH of the solution after 30.00 mL of NAOH have been added to the acid? HBr(aq) + NaOH(aq) → NaBr(aq) + H2O(aq) QUESTION 29 MgCl2 are added dropwise to a 1.2 M NaF solution. The minimun concentration of MgCl2 needed to to initiate a precipitate of magnesium fluoride is M. [Ksp(MgF2) = 6.9 × 10-91 X10-9 MGF2(s) S Mg-(aq) + 2F(aq)
Transcribed Image Text:QUESTION 27 What is the pH of a buffer solution that is made of 0.25 M benzoic acid (C6H5CO2H) and 0.15 M sodium benzoate (C6H5COONA)? (Ką = 6.5 × 10-3 for benzoic acid) C6HSCO2H(aq) + H20(aq) 2 C6H5CO0'(aq) + H3O*(aq) QUESTION 28 A 20.00-mL sample of 0.3000 M HBr is titrated with 0.15 M NAOH. What is the pH of the solution after 30.00 mL of NAOH have been added to the acid? HBr(aq) + NaOH(aq) → NaBr(aq) + H2O(aq) QUESTION 29 MgCl2 are added dropwise to a 1.2 M NaF solution. The minimun concentration of MgCl2 needed to to initiate a precipitate of magnesium fluoride is M. [Ksp(MgF2) = 6.9 × 10-91 X10-9 MGF2(s) S Mg-(aq) + 2F(aq)
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