The pKa value of ceftriaxone is approximately 3.8.
Sodium sulfide (Na₂S) itself does not have a pKa value because it is a salt and does not donate protons in solution. However, it dissociates in water to produce sulfide ions (S²⁻), which are the conjugate base of hydrogen sulfide (H₂S). The pKa of H₂S, which is relevant for understanding the acidity of sulfide ion, is approximately 7.0 for its first dissociation.
The pKa of drotaverine is around 8.67.
You can calculate the pKa value by using the Henderson-Hasselbalch equation: pH = pKa + log([A-]/[HA]), where [A-] is the concentration of the conjugate base and [HA] is the concentration of the acid. Rearranging the equation, you can solve for pKa by taking the antilog of both sides after isolating pKa.
pH = pKa + log [sodium acetate]/[acetic acid] = Henderson Hasselbalch equation
The pKa value of sodium borohydride is approximately 13.
The pKa value for sodium octanesulfonate is typically around 2.0 to 2.5.
Sodium hydroxide is a strong base and does not have a pKa value. Instead, it dissociates completely in water to form hydroxide ions (OH-) and sodium ions (Na+).
Yes, Benzoic acid is a weak acid (pKa ~ 4.2) that will dissolve in weak base such as sodium bicarbonate (pKa ~ 6.4)
There are two answers: bicarbonate has two pKa's - because bicarbonate can gain a proton to become carbonic acid or lose a proton to become carbonate. Two reactions; two pKa's. The pKa for bicarbonate carbonic acid reaction is 6.4 The pKa for bicarbonate carbonate reaction is 10.3 Both pKa's are temperature sensitive.
The conjugate acid is Hydrogen (H2), the pKa of which is 35.
The pKa value of ceftriaxone is approximately 3.8.
Sodium hydrogensulfate contains the HSO4- ion therfore it can function as an acid. It's pKa value is 1.9.
From this salt the benzoate ion C6H5-COO- is a base ( the other part Na+ is neutral).This base has a pKB value of 9.80 (benzoate)The pKacid value of its conjugated benzoic acid ( C6H5-COOH) however ispKbenzoic-acid = 4.20 = pKa(which is (not surprisingly) equal to 14.0-pKbase = 14.0-9.80)
The pKa for HCO3- ----> CO3-2 + H+ is 10.33 I assume you would have a reaction such as K+ HCO3- + H2O ------> K+CO3-2 + H3O+ In which the potassium acts as a neutral ion.
Sodium sulfide (Na₂S) itself does not have a pKa value because it is a salt and does not donate protons in solution. However, it dissociates in water to produce sulfide ions (S²⁻), which are the conjugate base of hydrogen sulfide (H₂S). The pKa of H₂S, which is relevant for understanding the acidity of sulfide ion, is approximately 7.0 for its first dissociation.
The effective pH range for a sodium phosphate buffer with a pKa value of 2.15 is typically 1.15 to 3.15. This range is optimal for buffering capacity at pH levels around the pKa value, ensuring stability and effectiveness for biological or chemical processes requiring a specific pH environment. Beyond this range, the buffer may not efficiently maintain the desired pH.