You react 105g of lithium nitride and excess water, and you get 48g of lithium hydroxide. what is the percent yield?

Percent yield = 22.26%

Explanation:

Given data:

Mass of lithium nitride = 105 g

Mass of lithium hydroxide produces = 48 g

Percent yield = ?

Solution:

Chemical equation:

Li₃N   +   3H₂O  →  3LiOH + NH₃

Number of moles of lithium nitride :

Number of moles = mass/ molar mass

Number of moles = 105 g/ 34.83 g/mol

Number of moles = 3 mol

Now we will compare the moles of lithium nitride with lithium hydroxide.

                   Li₃N         :          LiOH

                      1            :              3

                      3            :            3×3 = 9 mol

Mass of lithium hydroxide:

Mass = number of moles × molar mass

Mass = 9 mol × 23.95 g/mol

Mass = 215.6 g

Percent yield:

Percent yield = actual yield / theoretical yield × 100

Percent yield =   48 g/ 215.6 g × 100

Percent yield = 22.26%

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.