Calculate what mass of magnesium hydroxide will precipitate when a magnesium chloride solution

univerkov | January 17, 2021 | education

Calculate what mass of magnesium hydroxide will precipitate when a magnesium chloride solution interacts with a solution containing 0.1 mol of sodium hydroxide?

Given:
n (NaOH) = 0.1 mol
To find:
m (Mg (OH) 2)
Decision:
MgCl2 + 2NaOH = Mg (OH) 2 + 2NaCl
n (NaOH): n (Mg (OH) 2) = 2: 1
n (Mg (OH) 2) = 0.1 mol / 2 = 0.05 mol
m (Mg (OH) 2) = n * M = 0.05 mol * 58 g / mol = 11.6 g
Answer: 11.6 g

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.