Question

Solid phosphorus (P) and chlorine (C12) gas react to form solid phosphorus pentachloride (PCI). Suppose you have 7.0 mol of P and 3.0 mol of Cl, in a reactor. O yes Could half the P react? no X 5 ? If you answered yes, calculate how many moles of PCI, would be produced. Round your answer to the nearest 0.1 mol. mol

Answer 1

1)

chemical equation :

2 P (s) + 5 Cl2 (g)    ------------> 2 PCl5 (s)

2.0             5                                    2

7.0             3.0

here limiting reagent is Cl2.

because the mole ratio (3.0 / 5 = 0.6) is less than mole ratio of P (7 / 2 = 3.5)

moles of P reacted = 3.0 x 2.0 / 5 = 1.2

moles of P left = 7 - 1.2 = 5.8 .

so here not half of P reacted .

answer : No.