Abeaker has 0.2 m of na2so4. what will be the concentration of sodium and sulfate ions?
[na+] = 0.4 m, [so42-] = 0.2 m
[na+] = 0.2 m, [so42-] = 0.2 m
[na+] = 0.4 m, [so42-] = 0.4 m
[na+] = 0.2 m, [so42-] = 0.4 m

The concentration of sodium and sulphate ions are [] = 0.4 M, [] = 0.2 M

Explanation:

The molar concentration is defined as the number of moles of a molecule or an ion in 1 liter of a solution.

In the given solution, the concentration of the salt sodium sulphate is 0.2M. So, 0.2 moles of sodium sulphate is present in 1 liter of solution.

Assuming 100% dissociation,

1 molecule of sodium sulphate gives 2 ions of sodium and 1 ion of sulphate.

So 0.2 moles of sodium sulphate will give 0.4 moles of sodium ions and 0.2 moles of sulphate ions.

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