What is the mass of iron (3) hydroxide precipitated by the interaction of 16.25 grams of iron (3) chloride

univerkov | January 15, 2021 | education

What is the mass of iron (3) hydroxide precipitated by the interaction of 16.25 grams of iron (3) chloride with a solution of potassium hydroxide.

FeCl3 + 3KOH = Fe (OH) 3 + 3KCl.
1) Find the molar mass of iron chloride according to the periodic table: 56 + 35.5 * 3 = 162.5.
2) Find the amount of ferric chloride substance. To do this, divide the mass of the chloride by its molar mass: 16.25 / 162.5 = 0.1 mol.
3) According to the reaction equation, there is one mole of iron hydroxide for one mole of iron chloride. This means that the amount of iron hydroxide substance is 0.1 mol.
4) Molar mass of iron hydroxide: 56 + 48 + 3 = 107.
5) Mass of iron hydroxide: 107 * 0.1 = 10.7 g – answer.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.