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Which acid has a lower pH than hydrochloric acid?
How do you find PKA and pH?
What is the difference between pKa and pH?
Why is pH important?
pKa = −log K a = −log (7.4×10 −4 ) = 3.14. pH = pka + log ( [A - ]/ [HA]) pH = pKa + log ( [NO 2- ]/ [HNO 2 ]) pH = 3.14 + log (1/0.225) pH = 3.14 + 0.648 = 3.788. [H+] = 10 −pH = 10 −3.788 = 1.6×10 −4. View Article Sources. Cite this Article. pH and pKa are ways to express the strength of acids.
2 days ago · The scale ranges from 0 (most acidic) to 14 (most alkaline). It's rare to see extreme readings at either end of the scale in garden soils. In the garden, acidic soils usually have a pH of 4-6.5, and alkaline soils have a pH of 7.5-9. A reading of 7 is considered neutral. The best pH for most soils or the most common is around 6.5.
- Nadia Hassani
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2 days ago · It is recommended for use in products with a pH of 5.4 or below. The lower the pH of the formulation, the better the efficacy of the preservative. It is ECOCERT, COSMOS, NATRUE and BDIH-compliant.
2 days ago · A method for the syntheses of isolable, active esters is described in which carboxylic acids are treated with triphenylphosphine, iodine, and triethylamine. Active esters accessible in this way include N-hydroxysuccinimide esters, N-hydroxyphthalimide esters (N-(acyloxy)phthalimides), N-acylsaccharins, pentafluorophenol esters, pentachlorophenol esters, N-hydroxybenzotriazole esters, and ...
4 days ago · The product obtained was subjected to filtration (very slow filtration) followed by washing with distilled water until the pH was close to 7. The resulting material was dried in an oven for approximately 24 h at 105 °C (Reichle 1985 ; Elliot 1994 ).
5 days ago · Chemical recycling to monomers (CRM) offers a promising closed-loop approach to transition from current linear plastic economy toward a more sustainable circular paradigm. Typically, this approach has focused on modulating the ceiling temperature (Tc) of monomers. Despite considerable advancements, polymers with low Tc often face challenges such as inadequate thermal stability, exemplified by ...
1 day ago · The sulfuric acid acts as a dehydrating agent, removing the water from the reactants, as well as a catalyst, speeding up the ester formation reaction. The concentrated acid has readily available H + ions which help in facilitating the removal of the OH group in the carboxylic acid, and the Hydrogen from the alcohol, to form water.
