pKa given Dissociation Constant of Weak Acid Calculator

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✖The Dissociation Constant of Weak Acid is a quantitative measure of the strength of a weak acid in solution.ⓘ Dissociation Constant of Weak Acid [K_a]

+10%

-10%

✖Negative Log of Acid Ionization Constant gives us the acid ionization constant value on the pH scale.ⓘ pKa given Dissociation Constant of Weak Acid [pK_a]

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Formula

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pKa given Dissociation Constant of Weak Acid

Formula

`"pK"_{"a"} = -log10("K"_{"a"})`

Example

`"5"=-log10("1E^-5")`

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pKa given Dissociation Constant of Weak Acid Solution

STEP 0: Pre-Calculation Summary

Formula Used

Negative Log of Acid Ionization Constant = -log10(Dissociation Constant of Weak Acid)
pK_a = -log10(K_a)
This formula uses 1 Functions, 2 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.
Dissociation Constant of Weak Acid - The Dissociation Constant of Weak Acid is a quantitative measure of the strength of a weak acid in solution.

STEP 1: Convert Input(s) to Base Unit

Dissociation Constant of Weak Acid: 1E-05 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

pK_a = -log10(K_a) --> -log10(1E-05)

Evaluating ... ...

pK_a = 5

STEP 3: Convert Result to Output's Unit

5 --> No Conversion Required

FINAL ANSWER

5 <-- Negative Log of Acid Ionization Constant

(Calculation completed in 00.004 seconds)

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National Institute Of Technology (NIT), Surathkal

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< 14 Acidity and pH Scale Calculators

pOH of Mixture of Strong Acid and Strong Base when Solution is Basic in Nature

Go Negative Log of Hydroxyl Concentration = 14+log10((Normality of Solution 1*Volume of Solution 1-Normality of Solution 2*Volume of Solution 2)/(Volume of Solution 1+Volume of Solution 2))

pH of Mixture of Strong Acid and Strong Base when Solution is Acidic in Nature

Go Negative Log of Hydronium Concentration = -log10((Normality of Solution 1*Volume of Solution 1-Normality of Solution 2*Volume of Solution 2)/(Volume of Solution 1+Volume of Solution 2))

pH of Mixture of Two Strong Acids

Go Negative Log of Hydronium Concentration = -log10((Normality of Solution 1*Volume of Solution 1+Normality of Solution 2*Volume of Solution 2)/(Volume of Solution 1+Volume of Solution 2))

pOH of Mixture of Two Strong Bases

Go Negative Log of Hydroxyl Concentration = -log10((Normality of Solution 1*Volume of Solution 1+Normality of Solution 2*Volume of Solution 2)/(Volume of Solution 1+Volume of Solution 2))

pKa given Dissociation Constant of Weak Acid

Go Negative Log of Acid Ionization Constant = -log10(Dissociation Constant of Weak Acid)

pKb given Dissociation constant of Weak Base

Go Negative Log of Base Ionization Constant = -log10(Dissociation Constant of Weak Base)

pH given Concentration of Hydrogen Ion

Go Negative Log of Hydronium Concentration = -log10(Concentration of Hydrogen Ion)

pOH given Concentration of Hydroxyl Ion

Go Negative Log of Hydroxyl Concentration = -log10(Concentration of Hydroxyl Ion)

pH given Activity of Hydrogen Ion

Go Negative Log of Hydronium Concentration = -log10(Activity of Hydrogen Ion)

Dissociation Constant of Weak Acid given pKa

Go Dissociation Constant of Weak Acid = 10^(-Negative Log of Acid Ionization Constant)

Dissociation Constant of Weak Base given pKb

Go Dissociation Constant of Weak Base = 10^(-Negative Log of Base Ionization Constant)

Concentration of Hydrogen Ion given pH

Go Concentration of Hydrogen Ion = 10^(-Negative Log of Hydronium Concentration)

Concentration of Hydroxyl Ion given pOH

Go Concentration of Hydroxyl Ion = 10^(-Negative Log of Hydroxyl Concentration)

Activity of Hydrogen Ion given pH

Go Activity of Hydrogen Ion = 10^(-Negative Log of Hydronium Concentration)

pKa given Dissociation Constant of Weak Acid Formula

Negative Log of Acid Ionization Constant = -log10(Dissociation Constant of Weak Acid)
pK_a = -log10(K_a)

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.

How to Calculate pKa given Dissociation Constant of Weak Acid?

pKa given Dissociation Constant of Weak Acid calculator uses Negative Log of Acid Ionization Constant = -log10(Dissociation Constant of Weak Acid) to calculate the Negative Log of Acid Ionization Constant, The pKa given Dissociation Constant of Weak Acid formula is defined as the negative base-10 logarithm of the base dissociation constant (Ka) of a solution. Negative Log of Acid Ionization Constant is denoted by pK_a symbol.

How to calculate pKa given Dissociation Constant of Weak Acid using this online calculator? To use this online calculator for pKa given Dissociation Constant of Weak Acid, enter Dissociation Constant of Weak Acid (K_a) and hit the calculate button. Here is how the pKa given Dissociation Constant of Weak Acid calculation can be explained with given input values -> 5.958607 = -log10(1E-05).

FAQ

What is pKa given Dissociation Constant of Weak Acid?

The pKa given Dissociation Constant of Weak Acid formula is defined as the negative base-10 logarithm of the base dissociation constant (Ka) of a solution and is represented as pK_a = -log10(K_a) or Negative Log of Acid Ionization Constant = -log10(Dissociation Constant of Weak Acid). The Dissociation Constant of Weak Acid is a quantitative measure of the strength of a weak acid in solution.

How to calculate pKa given Dissociation Constant of Weak Acid?

The pKa given Dissociation Constant of Weak Acid formula is defined as the negative base-10 logarithm of the base dissociation constant (Ka) of a solution is calculated using Negative Log of Acid Ionization Constant = -log10(Dissociation Constant of Weak Acid). To calculate pKa given Dissociation Constant of Weak Acid, you need Dissociation Constant of Weak Acid (K_a). With our tool, you need to enter the respective value for Dissociation Constant of Weak Acid and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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