I am Having trouble deciding which formulas I need to use for Question 5 parts (

Question

I am Having trouble deciding which formulas I need to use for Question 5 parts (a) & (d). This is BioChem lab. If someone can hel explain this to me I would appreciate it. 1. Title of the Experiment 2. Introduction: State the purpose of today's experiment. How the knowledge of the pll and buffering system will be useful to a biochemist? 3. Methods and Materials: Include steps in your own words (no cut and pasting from the lab manual) 4. Include your results and calculations with legible handwritten or typed "Results" part from your lab manual. (DO NOT answer this part in your pre-lab write-up. You will complete this part in the lab) 5. Answer the following questions and attach with your prelab write-up. a) What is the [H'] in M, mM, and uM in a solution that has pH 5.5? Which formula would you use if you are to calculate the ratio of issociated vs. un-dissociated forms When sufficient H' is added to lower the pH by one unit, what is the corresponding increase in H"]? Explain with example, c) d)) Calculate the pH of 2.56x10 M monobasic base solution (assuming complete ionization) Identify sources of acid and base components of the following salts: i) Sodium Chloride ii) Potassium Acetate ii) Ammonium Chloride Formulas Water Dissociation:K, = 10-14-IH' ][OH' ] Henderson-Hasselbalch Equation: pH = pK, + Log( Weak Acids:ph PK,-Log HA Weak Base : phiPK, +14+ Log BOH) ,2222C, =Concentrationoflon;Z,=no.ofchargeonion ) pK, Values AceticAcid CH,COOH): 4.76 Ammoniun Hydroxide (NH,0H): 9.26 Formic Acid: 3.75

Explanation / Answer

Question 5 parts (a) you should use pH= -log[H+]

                        

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