Question

Gas-Law Stoichiometry If 7.50 L of water vapor at 50.2°C and 0.121 atm reacts with excess iron, how many grams of iron(III) oxide will be produced? 2Fe (s) + 3H20 (g) → Fe203 (s) + 3H2(g) Sort: Write down the quantities given in the problem. What can you use these quantities to solve for? > EAC Identify the original quantity/quantities given in or derived from the problem and the desired quantity the question is asking you to solve. Include units. Original quantity Desired quantity Strategize: Based on the units of the original quantity given in or derived from the problem and desired quantity above, list the equalities you will need to solve the problem. An equality is a mathematical relationship that can be used as a conversion factor. (e.g., 1 foot = 12 inches) List of Equalities: Solve: Check:

Answer 1

- The giuen belautionais: o a fe (s) +342019) fez Og(gs) +3117490 i V= 7.50L T= 50.2°C = 273+50:2 = 388.dk 2 P=0.121 atm n = 0.0342 mal (calculated below) These quantities are used to calculate the moles in) of Holg). 3 PV=nRT es Ongl atm x 7.SOL= nora 0.0621 Leatmik Lone PVid RI = 0 la latin x 7.5OL 0:0821 L'atmi.kt.mol 1x323.2k 0.03 42nolla Derired Original quantity Derived quantity PV, IN 5 n CS with CamScanner to

ī e list of equality 1o Conversion of Temperatwee °C tok I(K) = 073 + T(°C) = 223 + 50.2 = 323-2k Solve, & 2 According to reaction, 3 nuol Holo gines Inol re, O₂ (s). Therefore, 0.0342mal Ho(g) gines 0.0342 mol Feg Oza . 3 The mass is calculated as shown below Mass Moles X Molar man -= 0.0342 mol X 159.69 g/mol = 1.82g Theese fore, 1.89 kg0g cis peecdemed Scanced with CamScanner