Question

In the reaction of iron and chlorine, what mass of iron is needed to prepare 11.86 g of the iron chloride product if, under the conditions of the reaction, the electron configuration of the iron cation in the product is 1s22s22p63s23p63d6?

Answer 1

To prepare 11.86 g of iron chloride, approximately 4.08 g of iron is needed.

Step-by-step explanation:

In order to determine the mass of iron needed to prepare 11.86 g of iron chloride, we need to use stoichiometry. The balanced equation for the reaction is:

2 Fe + 3 Cl2 → 2 FeCl3

From this equation, we can see that the molar ratio between iron and iron chloride is 2:2. This means that one mole of iron reacts with one mole of iron chloride. To find the mass of iron needed, we can use the molar mass of iron chloride:

Molar mass of FeCl3: 162.2 g/mol

Now we can set up a proportion to solve for the mass of iron:

(11.86 g FeCl3) / (162.2 g/mol) = (x g Fe) / (55.8 g/mol)

Solving for x, we find that the mass of iron needed is approximately 4.08 g.

Answer 2

To determine the mass of iron needed to produce 11.86 g of iron chloride, we use stoichiometry based on the molar mass of iron and the stoichiometry of the reaction. The electron configuration provided confirms the iron cation in the product is Fe2+.

Step-by-step explanation:

The student is asking about a stoichiometry problem in chemistry, specifically regarding the reaction of iron and chlorine to form iron chloride (FeCl2). The question pertains to the mass of iron required to produce a certain mass of iron chloride, given that iron forms a +2 cation with the electron configuration 1s22s22p63s23p63d6, indicating Fe2+. The molar mass of iron (Fe) is 55.85 g/mol.

Given the information that 1.42 g of iron reacts with 1.80 g of chlorine to produce 3.22 g of FeCl2 and 8.60 kJ of heat, we can use stoichiometry to determine the mass of iron needed for the desired product. This mass, once calculated, will give us the amount of iron needed to react with chlorine to produce the specified mass of the iron chloride product.