Calculate the molarity of the K+ ion in a solution prepared by adding of 5.55 g of K2SO4 to enough water to form 0.500 L of solution.

1 answer

mols K2SO4 = grams/molar mass

M K2SO4 = mols/L solution
M K^+ = twice that because there are two K ions in one molecule of K2SO4.

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