Question

What mass of phosphorus pentachloride would be produced by the complete reaction of 4.11 g of Cl2?

Answer 1

Answer:

Explanation:

A mole ratio is ​the ratio between the amounts in moles of any two compounds involved in a chemical reaction. The mole ratio can be determined by examining the coefficients in front of formulas in a balanced chemical equation.

Step 1: write the balanced chemical equation.

P₄(s) + 10Cl₂ (g) -----> 4PCl₅(g)

Step 2: calculate the moles of Cl₂

Moles of Cl₂ = mass given / molar mass = ( 4.11 g / 70.906 g/mol ) = 0.058  mol

Step 3: Calculate the moles of phosphorus pentachloride

Sn(s) + 10Cl₂ (g) -----> 4PCl₅(s)

According to the reaction:
10 mol of Cl₂  produces 4 mol of PCl₅

So, 0.058  mol of Cl₂ will produced = ( 4 mol of PCl₅ / 10  mol of Cl₂ )× 0.058 mol of Cl₂ = 0.0232 mol of PCl₅

Step 4: Calculation of  PCl₅produced

we get moles of PCl₅ that can be produced = 0.0232 mol

Mass of PCl₅produced =( moles×molar mass ) = ( 0.0232 mol × 208.24 g/mol ) = 4.83 g