Ionic Strength Calculator

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Ionic solution is the solution where a strong electrolyte solution splits into its respective ions because it has

ionic compounds. Ionic strength is the strength of these ions in the solution and their activity with other ions

depends on this strength. Ionic strength calculator is an instant online tool which can easily calculate the ionic

strength of compounds.

Example 1: What is the ionic strength of 1.0M of KCl solution?

In order to find the Ionic strength of a solution, we can use the formula:

<-Ionic strength, I = 1/2 ∑ (Z_i²* M_i)

Where Z_i = charge of a particular ion in the solution

M_i = Molarity of the ion in the solution

KCl solution contains <- K⁺ and Cl^- ions

Z_K⁺ = 1 and Z_Cl^- = 1

<-M_K⁺ = 1.0M and M_Cl^- = 1.0M

Hence<- Ionic strength, I = 1/2 [(1²*1) +(1²*1)

<-I = ½(2) = 1.00

Example 2: What is the ionic strength of 1.0M of MgCl₂ solution?

In order to find the Ionic strength of a solution, we can use the formula:

<-Ionic strength, I = 1/2 ∑ (Z_i²* M_i)

Where Z_i = charge of a particular ion in the solution

M_i = Molarity of the ion in the solution

MgCl₂ solution contains <- Mg⁺² and 2Cl^- ions

Z_Mg⁺² = 2 and Z_Cl^- = 1

<-M_Mg⁺² = 1.0M and M_Cl^- = 2(1.0) = 2.0M

Hence<- Ionic strength, I = 1/2 [(2²*1) +(1²*2)

<-I =1/2*(6) = 3.00

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Ionic Strength Calculator

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