Every chemical has a unique pKa value (or set of pKa values if it can donate more than one proton). It’s important to remember that acidity is relative. If you take a weak acid such as acetic acid and mix it with water, acetic acid will donate a proton. If you mix in add a st...
When the concentration of the reactants is higher than the equilibrium concentration, what happens? What happens when hydrogen ions is added to acetic acid and acetate compared to when hydroxide ions are added ? What is formed when CO2 is released into the soil?
If the baking soda had not been added, would there still have been a source of carbon dioxide being introduced into the water? Explain. A 100.0-mL buffer solution is 0.175 M in HClO and 0.150 M in NaClO. What is the pH after addition of 150.0 mg of HBr?
Firstly, the pH levels in animal intestines (approximately pH ≥ 6) are typically higher than the pKa of MHA, meaning that MHA would be present essentially in its anionic form and would therefore require transporters (rather than diffusion) for uptake. Secondly, the transport of MHA via ...
Acidity (pKa)35 Flash Point95°C (open cup) Viscosity2.0 cP (25°C) Applications for Dimethyl Sulfoxide A superior reaction solventfor the production of Active Pharmaceutical Ingredients and intermediates.Many specific reactions run best in DMSO, producing higher product yields. The high polarity of...
This argument does not explain the requirement for a much higher pH to stain DNA with those dyes and fluorochromes not used as dye-metal complexes. Sequential treatment of sections with Al2(SO4)3 followed by hematein provides nuclear staining that is weaker than that attainable with hemalum....
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Because IAA is a weak acid (pKa = 4.75), a portion of it is lipophilic in its protonated form at apoplastic pH (≈5.5); nevertheless, cellular uptake across the plasma membrane was shown to be dependent on AUX1/LAX proteins functioning as high-affinity auxin-proton symporters [21,22...
If the pKa of HA was 4.8 and the pKa of BH+ was 10.3, what would be the value of the equilibrium constant? Two pKa values are reported for malonic acid, a compound with two COOH groups. Explain why one pKa is lower and one pKa is higher than the pKa of ...
HF (pKa = 3.45) c. HIO3 (pKa = 0.77) d. HBrO (pKa = 8.69) e. HCN (pKa = 9.31) If a 7.88 \times 10^{-4} solution of a weak acid is 18.8% ionized, what is the pK_a for the acid? The weak acid hippuric acid is 5.0% ionized at pH 2...