Given the equation: AgNO3 (aq) + Ca(OH)2 (aq) -->AgOH (s) + Ca(NO3)2 (aq)?

Question

Determine the theoretical yield of silver hydorxide if 19.0 grams of AgNO3 if reacted with 19.0 grams of Ca(OH)2 and identify the limiting and excess reactants. Determine the percent yield if 16.2 g of silver hydroxide are obtained.

Answer 1

The balanced eqn is:

2 AgNO3 (aq) + Ca(OH)2 (aq) -->2 AgOH (s) + Ca(NO3)2 (aq)

Molar mass of AgNO3 = 170

Molar mass of Ca(OH)2 = 74

Thus moles of AgNO3 (limiting)< Moles of Ca(OH)2(excess)

Theoretical yield = 19*125/85 = 27.941 g

Percent yield = 1620/27.941 = 57.9793136 %