When 30.0 g of zinc metal reacts with excess HCl,how many liters of H₂ gas are produced at STP? A)0.229 L B)0.458 L C)5.14 L D)10.3 L

Name: When 30.0 g of zinc metal reacts with excess HCl,how many liters of H 2 gas are produced at STP? A)0.229 L B)0.458 L C)5.14 L D)10.3 L
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Quizplus · Accepted Answer

At STP, 1 mole of gas occupies 22.4 L. The reaction is Zn + 2HCl → ZnCl2 + H2. Molar mass of Zn is 65.38 g/mol, so 30.0 g Zn is 0.459 mol. This produces 0.459 mol H2, which is 0.459 mol × 22.4 L/mol = 10.3 L.

When 300 G of Zinc Metal Reacts with Excess HCl,how Many