What is the pH of a buffer that is 0.061 M HF and 0.427 M LiF? The K₂ for HF is 3.5 10-4. Your Answer: Answer

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I need help with all parts of 6

This question has multiple parts. Work all the parts to get the most points. a Identify the buffer system(s) - the conjugate acid - base pair(s) - present in a solution that contains equal molar amounts of the following: (Select all that apply.) HC1 KCN | HNO2 KNO2 b (Select all that apply.) OK,CO3 H,CO3 KF HF

Which of the following chemicals would be the best buffer for a pH 9.00 solution: NH3 (Kb = 1.75x10-5), C6H5NH2 (Kb = 3.99x10-10), H2NNH2 (Kb = 3.00x10-6), C5H5N (Kb = 1.69x10-9)? Group of answer choices C5H5N H2NNH2 C6H5NH2 NH3

Consider the following buffer system: 0.89 M H₂CO3 and 0.54 M HCO3-. What is the pH of such a system (K₂ = 4.3 x 10-7)? Your Answer: Answer