The synthesis of zinc iodide was performed using 1.8912g of zinc and 1.5965g of iodine. Determine the limiting reactant and calculate the theoretical yield of zinc iodide in grams.

Answer 1

Zn + I2 ==> ZnI2
mols Zn = grams/atomic mass = ?
mols I2 = grams/molar mass = ?

convert mols Zn to mols of the product using the coefficients in the balanced equation.
Do the same for converting mols I2 to mols of the product.
It is likely that these two values will not agree which means one is wrong; the correct value in limiting reagent problem is ALWAYS the smaller one and the reagent responsible for that is the limiting reagent.
Using the smaller value convert that to grams by grams = mols x molar mass = ? and this is the theoreticalyield (TY).

Answer 2

answer: iodine limiting and TY 103.9%