When phosphorus reacts with chlorine, phosphorus trichloride is formed according to the following equation: ___P₄(s)+ ___Cl₂(g)→ ___PCl₃(l)(unbalanced)Balance the equation and determine how many grams of chlorine would be required to react with 21.2 g of phosphorus.

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The balanced equation is P4 + 6Cl2 → 4PCl3. The molar mass of P4 is 123.88 g/mol, and Cl2 is 70.90 g/mol. 21.2 g of P4 is 0.171 mol. According to the balanced equation, 6 moles of Cl2 are needed for 1 mole of P4, so 0.171 mol of P4 requires 1.026 mol of Cl2. This is equivalent to 72.8 g of Cl2.

When Phosphorus Reacts with Chlorine, Phosphorus Trichloride Is Formed According