(A) In Practice Example 4 11A, which reactant is in excess and what mass of that reactant remains after the reaction to produce PCl 3 (B) If 12 2 g H 2 and 154 g O 2 are allowed to react, which gas and what mass of that gas remains after the reaction 2 H 2 (g) O 2 (g) 2 H 2 O(l) Practice Ex 4 11(A)...

A To determine which reactant is in excess we need to calculate the limiting reactant We can do this ...

(A) In Practice Example 4-11A, which reactant is in excess and what mass of that reactant remains...

Question:

(A) In Practice Example 4-11A, which reactant is in excess and what mass of that reactant remains after the reaction to produce PCl₃?

(B) If 12.2 g H₂ and 154 g O₂ are allowed to react, which gas and what mass of that gas remains after the reaction?

2 H₂(g) + O₂(g) → 2 H₂O(l)

Practice Ex. 4-11(A)

If 215 g P₄ is allowed to react with 725 g Cl₂ in the reaction in Example 4-11, how many grams of PCl₃ are formed?

Example 4-11

Phosphorus trichloride, PCl₃ is a commercially important compound used in the manufacture of pesticides, gasoline additives, and a number of other products. A ball-and-stick model of PCl₃ is shown below. Liquid PCl₃ is made by the direct combination of phosphorus and chlorine.