Calculate what mass of iron (III) hydroxide will precipitate when a solution of iron (III)

Calculate what mass of iron (III) hydroxide will precipitate when a solution of iron (III) nitrate interacts with a solution containing 0.46 mol of potassium hydroxide.

Given:
n (KOH) = 0.46 mol
To find:
m (Fe (OH) 3)
Decision:
Fe (NO3) 3 + 3KOH = Fe (OH) 3 + 3KNO3
n (KOH): n (Fe (OH) 3) = 3: 1
n (Fe (OH) 3) = 0.46 mol / 3 = 0.15 mol
m (Fe (OH) 3) = n * M = 0.15 mol * 107 g / mol = 16.05 g
Answer: m (Fe (OH) 3) = 16.05 g



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