Answer:
a. 68.54 g
b. 11.67%
Step-by-step explanation:
The balanced chemical equation is:
1 LIOH + 1 KCI → 1 LICI + 1 KOH
a) The molar mass of LIOH is 23.95 g/mol. So, the number of moles of LIOH used is:
22 g / 23.95 g/mol = 0.920 mol
From the balanced chemical equation, we see that 1 mole of LIOH produces 1 mole of LICI. Therefore, the theoretical yield of LICI is 0.920 mol.
The molar mass of LICI is 74.55 g/mol. So, the theoretical yield of LICI in grams is:
0.920 mol × 74.55 g/mol = 68.54 g
Therefore, the theoretical yield of LiCl is 68.54 g.
b) The actual yield of LiCl is given as 8 grams.
The percent yield is given by the formula:
percent yield = (actual yield / theoretical yield) × 100%
Substituting the actual and theoretical yields, we get:
percent yield = (8 g / 68.54 g) × 100% = 11.67%
Therefore, the percent yield of LiCl is 11.67%.