pKa of Acidic Buffer using Henderson's Equation Calculator

⤿

Ionic equilibrium

Chemical equilibrium

⤿

Buffer Solution

Acidity and pH Scale

Ostwald Dilution Law

Relative Strength of Two Acids

Salt Hydrolysis

✖The Negative Log of Hydronium Concentration gives us the value of hydronium ion concentration on the pH scale.ⓘ Negative Log of Hydronium Concentration [pH]			+10% -10%
✖The Concentration of Salt is the number of moles of solute dissolved in 1 liter of solution.ⓘ Concentration of Salt [C_salt]			+10% -10%
✖The Concentration of Acid is the number of moles of acid dissolved in 1 liter of solution.ⓘ Concentration of Acid [C_acid]			+10% -10%

✖Negative Log of Acid Ionization Constant gives us the acid ionization constant value on the pH scale.ⓘ pKa of Acidic Buffer using Henderson's Equation [pK_a]

⎘ Copy

👎

Formula

✖

pKa of Acidic Buffer using Henderson's Equation

Formula

`"pK"_{"a"} = "pH"-log10("C"_{"salt"}/"C"_{"acid"})`

Example

`"2.477121"="3"-log10("50mol/L"/"15mol/L")`

Calculator

LaTeX

Reset

👍

Download Buffer Solution Formulas PDF PDF Image

pKa of Acidic Buffer using Henderson's Equation Solution

STEP 0: Pre-Calculation Summary

Formula Used

Negative Log of Acid Ionization Constant = Negative Log of Hydronium Concentration-log10(Concentration of Salt/Concentration of Acid)
pK_a = pH-log10(C_salt/C_acid)
This formula uses 1 Functions, 4 Variables

Functions Used

log10 - The common logarithm, also known as the base-10 logarithm or the decimal logarithm, is a mathematical function that is the inverse of the exponential function., log10(Number)

Variables Used

Negative Log of Acid Ionization Constant - Negative Log of Acid Ionization Constant gives us the acid ionization constant value on the pH scale.
Negative Log of Hydronium Concentration - The Negative Log of Hydronium Concentration gives us the value of hydronium ion concentration on the pH scale.
Concentration of Salt - (Measured in Mole per Cubic Meter) - The Concentration of Salt is the number of moles of solute dissolved in 1 liter of solution.
Concentration of Acid - (Measured in Mole per Cubic Meter) - The Concentration of Acid is the number of moles of acid dissolved in 1 liter of solution.

STEP 1: Convert Input(s) to Base Unit

Negative Log of Hydronium Concentration: 3 --> No Conversion Required
Concentration of Salt: 50 Mole per Liter --> 50000 Mole per Cubic Meter (Check conversion here)
Concentration of Acid: 15 Mole per Liter --> 15000 Mole per Cubic Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

pK_a = pH-log10(C_salt/C_acid) --> 3-log10(50000/15000)

Evaluating ... ...

pK_a = 2.47712125471966

STEP 3: Convert Result to Output's Unit

2.47712125471966 --> No Conversion Required

FINAL ANSWER

2.47712125471966 ≈ 2.477121 <-- Negative Log of Acid Ionization Constant

(Calculation completed in 00.004 seconds)

You are here -

Home » Chemistry » Equilibrium » Ionic equilibrium » Buffer Solution » pKa of Acidic Buffer using Henderson's Equation

Credits

Created by Shivam Sinha

National Institute Of Technology (NIT), Surathkal

Shivam Sinha has created this Calculator and 300+ more calculators!

Verified by Akshada Kulkarni

National Institute of Information Technology (NIIT), Neemrana

Akshada Kulkarni has verified this Calculator and 900+ more calculators!

< 11 Buffer Solution Calculators

pKa of Acidic Buffer using Henderson's Equation

Go Negative Log of Acid Ionization Constant = Negative Log of Hydronium Concentration-log10(Concentration of Salt/Concentration of Acid)

pH of Acidic Buffer using Henderson's Equation

Go Negative Log of Hydronium Concentration = Negative Log of Acid Ionization Constant+log10(Concentration of Salt/Concentration of Acid)

pOH of Basic Buffer using Henderson's Equation

Go Negative Log of Hydroxyl Concentration = Negative Log of Base Ionization Constant+log10(Concentration of Salt/Concentration of Base)

pKb of Basic Buffer using Henderson's Equation

Go Negative Log of Base Ionization Constant = Negative Log of Hydroxyl Concentration-log10(Concentration of Salt/Concentration of Base)

Concentration of Salt in Acidic Buffer using Henderson's equation

Go Concentration of Salt = Concentration of Acid*(10^(Negative Log of Hydronium Concentration-Negative Log of Acid Ionization Constant))

Concentration of Acid in Acidic Buffer using Henderson's Equation

Go Concentration of Acid = Concentration of Salt/(10^(Negative Log of Hydronium Concentration-Negative Log of Acid Ionization Constant))

Concentration of Salt in Basic Buffer using Henderson's Equation

Go Concentration of Salt = Concentration of Base*(10^(Negative Log of Hydroxyl Concentration-Negative Log of Base Ionization Constant))

Concentration of Base in Basic Buffer using Henderson's Equation

Go Concentration of Base = Concentration of Salt/(10^(Negative Log of Hydroxyl Concentration-Negative Log of Base Ionization Constant))

Buffer Capacity

Go Buffer Capacity = Number of Moles of Acid or Base/Change in pH

Maximum pH of Basic Buffer

Go Negative Log of Hydronium Concentration = 14-Negative Log of Base Ionization Constant

Maximum pOH of Acidic Buffer

Go Negative Log of Hydroxyl Concentration = 14-Negative Log of Acid Ionization Constant

pKa of Acidic Buffer using Henderson's Equation Formula

Negative Log of Acid Ionization Constant = Negative Log of Hydronium Concentration-log10(Concentration of Salt/Concentration of Acid)
pK_a = pH-log10(C_salt/C_acid)

What is pKa value?

The pKa value is one method used to indicate the strength of an acid. pKa is the negative log of the acid dissociation constant or Ka value. A lower pKa value indicates a stronger acid. That is, the lower value indicates the acid more fully dissociates in water.

What is a buffer solution?

A buffer solution (more precisely, pH buffer or hydrogen ion buffer) is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. Its pH changes very little when a small amount of strong acid or base is added to it.

How to Calculate pKa of Acidic Buffer using Henderson's Equation?

pKa of Acidic Buffer using Henderson's Equation calculator uses Negative Log of Acid Ionization Constant = Negative Log of Hydronium Concentration-log10(Concentration of Salt/Concentration of Acid) to calculate the Negative Log of Acid Ionization Constant, The pKa of acidic buffer using Henderson's equation formula is defined as the function of pH, the concentration of the salt and the concentration of the acid, which is given in Henderson's equation. Negative Log of Acid Ionization Constant is denoted by pK_a symbol.

How to calculate pKa of Acidic Buffer using Henderson's Equation using this online calculator? To use this online calculator for pKa of Acidic Buffer using Henderson's Equation, enter Negative Log of Hydronium Concentration (pH), Concentration of Salt (C_salt) & Concentration of Acid (C_acid) and hit the calculate button. Here is how the pKa of Acidic Buffer using Henderson's Equation calculation can be explained with given input values -> 2.477121 = 3-log10(50000/15000).

FAQ

What is pKa of Acidic Buffer using Henderson's Equation?

The pKa of acidic buffer using Henderson's equation formula is defined as the function of pH, the concentration of the salt and the concentration of the acid, which is given in Henderson's equation and is represented as pK_a = pH-log10(C_salt/C_acid) or Negative Log of Acid Ionization Constant = Negative Log of Hydronium Concentration-log10(Concentration of Salt/Concentration of Acid). The Negative Log of Hydronium Concentration gives us the value of hydronium ion concentration on the pH scale, The Concentration of Salt is the number of moles of solute dissolved in 1 liter of solution & The Concentration of Acid is the number of moles of acid dissolved in 1 liter of solution.

How to calculate pKa of Acidic Buffer using Henderson's Equation?

The pKa of acidic buffer using Henderson's equation formula is defined as the function of pH, the concentration of the salt and the concentration of the acid, which is given in Henderson's equation is calculated using Negative Log of Acid Ionization Constant = Negative Log of Hydronium Concentration-log10(Concentration of Salt/Concentration of Acid). To calculate pKa of Acidic Buffer using Henderson's Equation, you need Negative Log of Hydronium Concentration (pH), Concentration of Salt (C_salt) & Concentration of Acid (C_acid). With our tool, you need to enter the respective value for Negative Log of Hydronium Concentration, Concentration of Salt & Concentration of Acid and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search