Αποτελέσματα Αναζήτησης
7 Ιουλ 2024 · This pKa calculator helps you find the pKa from pH with the Henderson-Hasselbalch equation or with acid dissociation constant (Ka) values.
22 Νοε 2024 · Use the pKa Calculator to find the acid dissociation constant (pKa) of a substance based on its pH and concentration. Ideal for chemistry studies and acid-base equilibrium analysis.
Calculating pH from a pKa value involves several steps: Identify the acid or base and its pKa value. Determine the initial concentration of the acid or base. Set up the Henderson-Hasselbalch equation using the known values. Solve for the unknown variable (usually the ratio of conjugate base to acid). Calculate the final pH using the equation.
3 Οκτ 2024 · Formula. The formula to calculate pKa is as follows: \[ pK_a = pH - \log{\frac{[CB]}{[WA]}} \] where: \( pK_a \) is the acid dissociation constant in logarithmic form, \( pH \) is the pH value of the solution, \( [CB] \) is the concentration of the conjugate base in mol/L, \( [WA] \) is the concentration of the weak acid in mol/L.
Calculate the pH of a solution with a concentration of 0.01 M acetic acid. Given: pKa = 4.76 and concentration of acetic acid = 0.01 M. Use the Henderson-Hasselbalch equation: pH = pKa + log 10 ([A −] [HA]) Substitute the values: pH = 4.76 + log 10 (0.01 1.00) Calculate: pH = 4.76 − 2 = 2.76. The pKa of ammonia (N H 3) is 9.25.
Assuming acidity constant | Use hydrogen ion concentration, conjugate base concentration and acid concentration instead
Calculate pKa, pH, or the ratio of conjugate base to acid using the Henderson-Hasselbalch equation with BioCalcs free pKa Calculator. Ideal for chemistry and biochemistry applications.
