Calculate the λ0m for Cl- ion from the data given below:Λ0m MgCl2 = 258.6 Scm2mol–1 and λ0m Mg2+ = 106 Scm2mol–1

Question

Calculate the λ0m for Cl- ion from the data given below:

Λ0m MgCl2 = 258.6 Scm²mol–1
λ0m Mg²+ = 106 Scm²mol–1

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Solution

To calculate the λ0m for Cl- ion, we can use the following equation:

Λ0m (MgCl2) = Λ0m (Mg2+) + 2Λ0m (Cl-)

We know that Λ0m (MgCl2) = 258.6 Scm2mol–1 and Λ0m (Mg2+) = 106 Scm2mol–1. We can substitute these values into the equation and solve for Λ0m (Cl-):

258.6 = 106 + 2Λ0m (Cl-)

Subtract 106 from both sides:

152.6 = 2Λ0m (Cl-)

Finally, divide both sides by 2 to solve for Λ0m (Cl-):

Λ0m (Cl-) = 152.6 / 2 = 76.3 Scm2mol–1

So, the λ0m for Cl- ion is 76.3 Scm2mol–1.

This problem has been solved

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