Question

Mixed Problems 10. Given the following reaction: 4 C3H3 + 302 - 3C02 + 4H2. How many moles of oxygen are necessary to react completely with 4.0 moles of propane (C3H8)? 11. Given the following reaction: 4 KO2 + 2 H2O + 4 CO2 - 4 KHCO3 + 3 02. How many moles of O2 will be produced if 2.94 moles of CO, react completely? 12. Given the following reaction: NH NO, N2O + H2O a. How many grams of NH NO, are required to produce 33.0 grams of N,O?

Answer 1

Answer of the question no.10::

The complete reaction of Propane(C₃H₈) with oxygen is given by, C₃H₈ + 5O₂ = 3CO₂ + 4H₂O

From the above reaction,it is clear that 1 mole propane requires 5 moles of O₂ for complete reaction.Hence, for the complete reaction of 4 moles of propane, (4×5)=20 moles of O₂ will be required.

Answer of the question no. 11:

4KO₂ + 2H₂O + 4CO₂ = 4KHCO₃ + 3O₂

From the following reaction,it is quite obvious that 4 moles of CO₂ completely reacts with KO₂(potassium superoxide) and H₂O(water) to produce 3 moles of O₂.

hence, 4 moles of CO₂ are required to form 3 moles of O₂

Thus, 2.94 moles CO₂ will produce = 2.94 × 3/4 = 2.205 moles of O₂.

Answer of question no. 12:

NHA NO3 = N₂O + 2H₂O Molecular wt 80 44 (g/mol 36 ... To produce, 44 g. of No require 80 g. of NaNO3 g. " NO " = 80 g. " NH4NO3 i. 338. " NO "280 x g. u = 60 g. of NH4NO3 44 60g. of NH 4 NO₂ are required to produce 339. of NO.