Question

Empirical Formula Determination

1. The following reaction is carried out to completion with excess zinc metal and with a solution of iron chloride of unknown chemical composition:

Fe?Cl? + Zn---->Fe + ZnCl2

Initial grams FeCl 2.071 g

Grams/mole Zn=65.39

Grams/mole Fe=55.847

0.708 g of collected, dried iron metal is obtained by the end of the procedure. Using any method you choose, determine the empirical formula for iron chloride? (Atomic mass of Cl = 35.453 g/mol.)

2. Using the chemical formula obtained in Part 1 above for iron chloride, write the balanced chemical equation for its reaction with zinc metal?

3. If 1.331 g of zinc metal vanishes during the reaction, use this amount to determine the percent yield of iron metal obtained in this reaction?

Answer 1