Question

Ammonium perchlorate (NH4CIO4 is the solid rocket fuel used by the U.S. Space Shuttle. It reacts with itself to produce nitrogen gas (N2), chlorine gas (C12), oxygen gas 02), water (H20), and a great deal of energy What mass of chlorine gas is produced by the reaction of 7.4 g of ammonium perchlorate? Round your answer to 2 significant digits.

Answer 1

To find the mass of chlorine gas (C1,) Given that 7.4g of ammonium perchlorate (NH,C10.) Balanced chemical reaction 2NH, 40,(s) →N, (g)+a,(g) +20,(g) +4H,0(1) First find the moles of ammonium perchlorate (NH, C10 ) moles = mass molarm ass To calculate the molar mass of NH,CIO The atomic masses of atoms in the given from peridic table N(Nitrogen) = 14.0067 g=1 atom H(Hydrogen) = 1.00794 g = 4 atoms Cl(Chlorine) = 35.453g = 1 atom O(Oxygen) = 16g = 4 atoms Add the atomic masses of all of the atoms in the molecule 14.0067+(1.00794)4+35.453+(16)4=117.49g/mol _ 7.4g moles=; 117.49g/mol = 0.0629 moles find the moles of chlorine gas (az) According to reaction C1, and NH, CO, is 1:2 mole ratio 1 mole of C1, Therefore moles of Cl, = 0.0629 moles of NH C10, x= -= 0.03145moles of C1, 2 moles of NH,C104 To find the mass of chlorine gas ((,) mass = moles Xmolarmass molarmass of Cl, = 70.906g/mol mass = 0.03145molx 70.906g/mol = 2.230g Hence the mass of chlorine gas (C1, ) = 2.230g|