Which process has the highest atom economy for preparing but-1-ene, C4H8\text{C}_4\text{H}_8C4H8?
In each process, assume that but-1-ene is the only product that is used.
C8H18→C4H8+C4H10\text{C}_8\text{H}_{18} \rightarrow \text{C}_4\text{H}_8 + \text{C}_4\text{H}_{10}C8H18→C4H8+C4H10
C4H9OH→C4H8+H2O\text{C}_4\text{H}_9\text{OH} \rightarrow \text{C}_4\text{H}_8 + \text{H}_2\text{O}C4H9OH→C4H8+H2O
C4H9Cl→C4H8+HCl\text{C}_4\text{H}_9\text{Cl} \rightarrow \text{C}_4\text{H}_8 + \text{HCl}C4H9Cl→C4H8+HCl
C10H22→2C4H8+C2H6\text{C}_{10}\text{H}_{22} \rightarrow 2\text{C}_4\text{H}_8 + \text{C}_2\text{H}_6C10H22→2C4H8+C2H6
