Date | May 2012 | Marks available | 1 | Reference code | 12M.1.hl.TZ2.23 |
Level | HL | Paper | 1 | Time zone | TZ2 |
Command term | Question number | 23 | Adapted from | N/A |
Question
Which reaction represents an acid–base reaction according to the Lewis theory but not according to the Brønsted–Lowry theory?
A. \({\text{CO}}_3^{2 - }({\text{aq)}} + {{\text{H}}_3}{{\text{O}}^ + }({\text{aq)}} \rightleftharpoons {{\text{H}}_2}{\text{O(l)}} + {\text{HCO}}_3^ - {\text{(aq)}}\)
B. \({\text{C}}{{\text{H}}_3}{\text{COOH(aq)}} + {\text{N}}{{\text{H}}_3}({\text{aq)}} \rightleftharpoons {\text{NH}}_4^ + ({\text{aq)}} + {\text{C}}{{\text{H}}_3}{\text{CO}}{{\text{O}}^ - }({\text{aq)}}\)
C. \({\text{N}}{{\text{H}}_3}({\text{aq)}} + {\text{HF(aq)}} \rightleftharpoons {\text{NH}}_4^ + ({\text{aq)}} + {{\text{F}}^ - }({\text{aq)}}\)
D. \({\rm{CuS}}{{\rm{O}}_{\rm{4}}}{\rm{(s)}} + 5{{\rm{H}}_{\rm{2}}}{\rm{O(l)}} \rightleftharpoons {\rm{CuS}}{{\rm{O}}_{\rm{4}}}{\rm{ \bullet 5}}{{\rm{H}}_{\rm{2}}}{\rm{O(s)}}\)
Markscheme
D