Question

The substances containing only C, and H, or C, H and one or more other elements are given. Combine the following reactions with molecular Oxygen O2 as one reaction, and then Ozone O3 as a second reaction for the same substance This means you will write 12 complete reactions for each combustion type, providing both the products and the reactants. For each substance containing a hetero atom (N, S, P), assume it forms NO2, SO2, or P2O3.

1. Heptane C7H16 2. Benzoic Acid C7H6O2 3. Diethyl Ether C4H10O 4. Diethyl Sulfide C4H10S 5. Triethyl Amine C6H15N 6. Trimethyl Phosphine C3H9P   

Here are two examples that are not balanced, since the reactant has an unknown formula. Assume the substance is the limiting reactant. CxHyPz (l) + O2 (g) ----> CO2 (g) + H2O (g) + P2O3 (s) CxHyPz (l) + O3 (g) ----> CO2 (g) + H2O (g) + P2O3 (s)

Answer 1

1. Heptane:

$C_7H_{16}\,+\, 11\,O_2\; \rightarrow\; 7\,CO_2\,+\,8\,H_2O$

$3C_7H_{16}\,+\, 22\,O_3\; \rightarrow\; 21\,CO_2\,+\,24\,H_2O$

2. Benzoic acid:

$2C_7H_{6}O_2\,+\, 15\,O_2\; \rightarrow\; 14\,CO_2\,+\,6\,H_2O$

$C_7H_{6}O_2\,+\, 5\,O_3\; \rightarrow\; 7\,CO_2\,+\,3\,H_2O$

3.Diethyl ether:

$C_4H_{10}O\,+\, 6\,O_2\; \rightarrow\; 4\,CO_2\,+\,5\,H_2O$

$C_4H_{10}O\,+\, 4\,O_3\; \rightarrow\; 4\,CO_2\,+\,5\,H_2O$

4. Diethyl sulfide:

$2C_4H_{10}S\,+\, 15\,O_2\; \rightarrow\; 8\,CO_2\,+\,10\,H_2O\,+2\,SO_2$

$C_4H_{10}S\,+\, 5\,O_3\; \rightarrow\; 4\,CO_2\,+\,5\,H_2O\,+\,SO_2$

5. Triethyl amine:

$4C_6H_{15}N\,+\, 43\,O_2\; \rightarrow\; 24\,CO_2\,+\,30\,H_2O\,+4\,NO_2$

$6C_6H_{15}N\,+\, 43\,O_3\; \rightarrow\; 36\,CO_2\,+\,45\,H_2O\,+6\,NO_2$

6. Trimethyl phosphine:

$2C_3H_{9}P\,+\, 8\,O_2\; \rightarrow\; 2\,CO_2\,+\,9\,H_2O\,+\,P_2O_3$

$4C_3H_{9}P\,+\, 16\,O_3\; \rightarrow\; 12\,CO_2\,+\,18\,H_2O\,+2\,P_2O_3$