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The reaction conditions leading to the best yield of `C_2H_5Cl` are
A. |
`C_2H_6+Cl_2overset{triangle}{rightarrow}` (excess) (excess) |
B. |
`C_2H_6+Cl_2overset{triangle}{rightarrow}` (less) (less) |
C. |
`C_2H_6+Cl_2overset{triangle}{rightarrow}` (excess) (less) |
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D. |
`C_2H_6+Cl_2overset{triangle}{rightarrow}` (less) (excess) |