Is the Molar Concentration of K+ in K2S2O4 Double That of S2O4^2-?

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SUMMARY

The molar concentration of K+ in K2S2O4 is indeed double that of S2O4^2-. Given a concentration of C(S2O4^2-) = 1 mol/L, the concentration of K+ is calculated as C(K+) = 2C(S2O4^2-) = 2 mol/L due to the presence of two potassium ions per formula unit of K2S2O4. This conclusion is based on stoichiometric relationships in the compound.

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suppose that the molar concentration of (2k+ , (S2O4)2-) is C=1mol/l

we have C((S2O4)2-)=C=1mol.l but does C(2k+)=1 mol/l ? or 2C=2mol/l(since there are 2 k+ )

this question might be silly , but this really confused me and i can't come up with the correct answer
 
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2 mol/L.
 

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