What is the pH of a 0.057 M solution of HCl? What is the pH of a solution of HCl in which H+ = 0.043 M? What is the pH of a 0.1M HCl solution? What is the pH of a 0.125 M HCl solution? What is the pH of a 0.015 M HCl solution? What is ...
Answer to: A buffer solution is made using a weak acid, HA. If the pH of the buffer is 6 and the ratio of A^- to HA is 0.001, what is the pK_a of...
pKa is the measurement of acidity or basicity of achemicalorfunctional group. The acidity or basicity of a chemical or functional group can be defined in two ways: The ability to accept or donate a proton. The ability to accept or donate a lone pair of electrons. ...
This is used to calculate pKa, the logarithmic constant: PKA = – log10 Ka The larger the pKa value, the smaller the dissociation of the acid and the weaker the acid. Strong acids have a pKa of less than -2. We’ve created this content for informational purposes only, and it reflects...
The emf of the following cell was measured at 25∘C and found to be 0.322 V. What is the pH of the solution? Pt/H2(g)/HCl(?M,aq)/AgCl(s)/Ag Nernst Equation: Each electrochemical (redox) reaction has a cell pot...
Answer to: What is the pH of a buffer prepared by adding 30.0 mL of 0.15 M HC_2H_3O_2 (acetic acid) to 70.0 mL of 0.20 M NaC_2H_3O_2 (sodium...
Tris-HCl is an acidic buffer, mainly used to prepare buffers with a physiological range of 7.3 ~ 7.5. Tris hydrochloride can be prepared by 2-amino-1,3-propanedio with 2-amino-1,3-propanedio. Tris is also called tris base. As a weakly alkaline solution, it has a pKa of 8.1 at 25...
Here, S is a solvent molecule, such as water or dimethyl sulfoxide (DMSO). For example, here is the dissociation of hydrochloric acid in water: HCl(aq) → H+(aq) + Cl-(aq) A strong acid hasa pKa valueless than -2. The pKa value of the acid depends on the solvent. For example,...
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What is the site and mechanism of antipsychotic actions of chlorpromazine?当系统在某一转速下运行时，负载由理想空载增加到额定值时所对应的转速降落ΔnN 与理想空载转速n0 之比，称作静差率