If 5.15 g Fe(NO₃)₃ is dissolved in enough water to make exactly 150.0 mL of solution,what is the molar concentration of nitrate ion?

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Quizplus · Accepted Answer

The molar mass of Fe(NO3)3 is approximately 241.86 g/mol. The moles of Fe(NO3)3 are 5.15 g / 241.86 g/mol = 0.0213 mol. Since each formula unit of Fe(NO3)3 contains 3 nitrate ions, the moles of nitrate ions are 3 * 0.0213 mol = 0.0639 mol. The molar concentration of nitrate ions is 0.0639 mol / 0.150 L = 0.426 M.

If 515 G Fe(NO3)3 Is Dissolved in Enough Water to Make

If 515 G Fe(NO₃)₃ Is Dissolved in Enough Water to Make