pKa for carbonic acid = 6.1. Explain why the pH of blood is 7.What is the ratio of conjugate base to acid when pH = pKa+1?What is the conjugate base of carbonic acid, H2CO3?Which of the following is the most effective buffer system for a pH value of ...
Which buffer system is the best choice to create a buffer with pH = 9.00? A. HF/KF B. HNO_2/KNO_2 C. NH_3/NH_4Cl D. HClO/KClO What is the pH of a buffer system that contains 0.24 M NH4+ and 0.12 M NH3? The pKa of NH4+ is 9.25. ...
It is a branch of natural science that examines the building blocks of matter, including the atoms, molecules, and ions that make up compounds and their composition, structure, behaviour, and changes that occur when they interact with other things. The quantum mechanical approach is currently used...
Tris is also called tris base. As a weakly alkaline solution, it has a pKa of 8.1 at 25 °C. Its effective buffer pH range is between 7.0-9.2, and the pH of the prepared aqueous solution is around 10, and its pH is often adjusted by adding hydrochloric acid. During experiments, it...
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The Henderson-Hasselbalch is especially useful to estimate the pH of a buffer solution. pH=pKa+log[base][acid]. Answer and Explanation: {eq}\text{At a pH of 7.40 the ratio will be} CO_3^{-2} to HCO_3^{-}\ K_a =4.7\times 10^{-11}\ pK_a=-log\left[K_a\r...
What are the products of the hydrolysis of NH4Cl? Do the following products below form when HCl (acid) reacts with CaCO_3 (limestone)? Explain why or why not for each answer. a) O_2 (g) b) NaCl (aq) What is the conjugate base of the Bronsted-Lowry acid HCOOH?
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What are the advantages of the mechanical method? （ ）strong ability to resist external interference;stability and security; equipment