| Date | May 2014 | Marks available | 1 | Reference code | 14M.1.hl.TZ1.27 |
| Level | HL | Paper | 1 | Time zone | TZ1 |
| Command term | Question number | 27 | Adapted from | N/A |
Question
Which mixture of solutions can be used to prepare a buffer solution?
A. \({\text{50.0 c}}{{\text{m}}^{\text{3}}}{\text{ 0.100 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}{\text{ HCl}}\) and \({\text{100.0 c}}{{\text{m}}^{\text{3}}}{\text{ 0.100 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}{\text{ N}}{{\text{H}}_{\text{3}}}\)
B. \({\text{50.0 c}}{{\text{m}}^{\text{3}}}{\text{ 0.100 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}{\text{ HCl}}\) and \({\text{50.0 c}}{{\text{m}}^{\text{3}}}{\text{ 0.100 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}{\text{ N}}{{\text{H}}_{\text{3}}}\)
C. \({\text{50.0 c}}{{\text{m}}^{\text{3}}}{\text{ 0.100 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}{\text{ HCl}}\) and \({\text{100.0 c}}{{\text{m}}^{\text{3}}}{\text{ 0.100 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}{\text{ N}}{{\text{H}}_{\text{4}}}{\text{Cl}}\)
D. \({\text{50.0 c}}{{\text{m}}^{\text{3}}}{\text{ 0.100 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}{\text{ HCl}}\) and \({\text{50.0 c}}{{\text{m}}^{\text{3}}}{\text{ 0.100 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}{\text{ N}}{{\text{H}}_{\text{4}}}{\text{Cl}}\)
Markscheme
A
