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1. Calculate the pH of a buffer prepared by mixing 0.26 M hydrazine, N 2 H 4 , with 0.86M hydrazine chlorideN 2 H 5

1. Calculate the pH of a buffer prepared by mixing 0.26 M hydrazine, N₂H₄, with 0.86M hydrazine chlorideN₂H₅Cl+ given that the Kb for hydrzaine is 1.7x10^-6

^2.A sodium hydroxide solution has a pH of 11.40, what is the [H₃O⁺] in this solution?:

2.5 10³ M

2.5 10¹¹ M

4.0 10²⁶ M

4.0 10¹² M

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