A chemist investigates a nitrogen-containing family of organic compounds. Compounds J, K and L are all members of this family. J and K are consecutive members.
| Compound | Formula | Relative formula mass |
|---|---|---|
| J | C2H5NH2\mathrm{C_{2}H_{5}NH_{2}}C2H5NH2 | 45.0 |
| K | C3H7NH2\mathrm{C_{3}H_{7}NH_{2}}C3H7NH2 | 59.0 |
| L | to be determined | 115.0 |
Deduce the formula of compound L.
Show your working.
Explain why the chemist can use a reaction of J to predict how L will react.
122 exam-style questions on OCR GCSE Chemistry 2.3 Properties of materials, covering 2.3.1 Carbon bonding and the variety of organic compounds, 2.3.2 Diamond, graphite, fullerenes and graphene, 2.3.3 Bond strength, changes of state and predicting states, 2.3.4 Bulk properties and types of bonding, and 2.3.5 Nanoparticles: scale, surface area, uses and risks. Each one has a worked solution and a mark scheme showing where the marks go.