A) Write a solution map (withg all conversion factors and units) for the calcula

Question

A) Write a solution map (withg all conversion factors and units) for the calculation of the theorical yield in grams for this generic reaction 3A2+4B ---> 2A3B2. Assume you are given the starting masses of A and B and explain how you will decide which reactant is limiting.

Use solution map above to answer the following about double displacement reaction of 90.0g of FeCl3(aq) with 52.0 g of H2S (aq) below:

B) Write the balanced equation with states for reaction above in (B).

C) What is the limiting reactant?

D) What is the theoritical yield of the aqueous product in grams?

E) If an experiment yield of 52.0g of the aqueous product was obtained what is the percent yield?

F) What is the mass of th excess reactant that remains after the reaction?

Explanation / Answer

B) 2FeCl3 +3 H2S --------> Fe2S3 + 6HCl

C) A limiting reagent is FeCl3

D) moles FeCl3 = 90.0 / 162.199 g/mol= 0.555
moles H2S = 52.0 / 34.082 g/mol= 1.53

the theoritical yield of the aqueous product HCl = 0.555 x 6 / 2= 1.665
Mass HCl = 1.665 x 36.46 g/mol= 60.7 g

E) expermental yield = 52*100/60.7 = 85.67%

F) moles H2S needed = 0.555 x 3 / 2= 0.8325
moles H2S in excess = 1.53 - 0.8325 = 0.6975
Mass H2S = 0.6975 x 34,082 = 23.8 g

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.