| Date | May 2011 | Marks available | 1 | Reference code | 11M.1.sl.TZ2.11 |
| Level | SL | Paper | 1 | Time zone | TZ2 |
| Command term | Identify | Question number | 11 | Adapted from | N/A |
Question
When \({{\text{C}}_{\text{2}}}{{\text{H}}_{\text{2}}}\), \({{\text{C}}_{\text{2}}}{{\text{H}}_{\text{4}}}\) and \({{\text{C}}_{\text{2}}}{{\text{H}}_{\text{6}}}\) are arranged in order of increasing carbon-carbon bond strength (weakest bond first), what is the correct order?
A. \({{\text{C}}_{\text{2}}}{{\text{H}}_{\text{2}}}{\text{, }}{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{4}}}{\text{, }}{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{6}}}\)
B. \({{\text{C}}_{\text{2}}}{{\text{H}}_{\text{2}}}{\text{, }}{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{6}}}{\text{, }}{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{4}}}\)
C. \({{\text{C}}_{\text{2}}}{{\text{H}}_{\text{6}}}{\text{, }}{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{4}}}{\text{, }}{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{2}}}\)
D. \({{\text{C}}_{\text{2}}}{{\text{H}}_{\text{6}}}{\text{, }}{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{2}}}{\text{, }}{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{4}}}\)
Markscheme
C
