University:
Dallas College
Course:
CHEM 1405 | Introductory Chemistry I
Academic year:

2023
Views:

494

Pages:

3
Author:

Allie Davidson

Stoichiometry Calculation Practice Worksheet 1. Calculate the number of moles of NaOH that are needed to react with 500.0 g of H2SO4 according to the following equation: H2SO4 + 2 NaOH  Na2SO4 + 2 H2O 2. Calculate the mass of NH3 that can be produced from the reaction of 125 g of NCl3 according to the following equation: NCl3 + 3 H2 O  NH3 + 3 HOCl ANS: 17.7 g 3. Identify the limiting reactant and determine the mass of CO2 that can be produced from the reaction of 25.0 g of C3H8 with 75.0 g of O2 according to the following equation: C3H8 + 5 O2  3 CO2 + 4 H2 O ANS: 61.9 g 4. How many grams of SO2 are produced when 152 g of CS2 react with 48.0 g of O2 according to the following equation: CS2 + 3 O2  CO2 + 2 SO2 ANS: 64.1 g 1 5. When 50.0 g of MgCO3 react completely with H3PO4, as shown below,15.8 g of CO2 are produced. What is the percent yield for this reaction? 2 H3PO4 + 6. 3 MgCO3  Mg3(PO4)2 + 3 CO2 + 3 H2O ANS: 60.5% How many grams of P4O10 can be produced from the reaction of 52.9 g of KClO3 with excess phosphorous as shown below: KClO3 (s) + P4 (s)  P4O10 (s) + KCl (s) (unbalanced) ANS: 36.8 g 7. Given the equation below, determine the limiting reactant, and calculate how many grams of Cu can be formed from the reaction of 18.1 g of NH3 and 90.4 g of CuO. 2 NH3 (g) + 3 CuO (s)  N2 (g) + 3 Cu (s) + 3 H2O (g) ANS: 72.2 g 2 8. When 50.0 g of MgCO3 react completely with H3PO4, as shown below,15.8 g of CO2 is produced. Determine the theoretical and percent yield for this reaction? 2 H3PO4 + 3 MgCO3  Mg3(PO4)2 + 3 CO2 + 3 H2O ANS: 26.1 g; 60.5% 9. What mass of F2 is needed to produce 120.0 g of PF3, as shown, if the reaction has a 78.1% yield? P4 (s) + 6 F2 (g)  4 PF3 ANS: 99.6 g 3