Question

3 a. The particle A is ionized into A and A+ ions in a mass spectrometer in which air was evacuated. (1) Explain briefly why the instrument was evacuated. (ii) State any two reasons why particles must be ionized before being analyzed in the mass spectrometer (iii) To what extent would the Aand A" ions be deflected in the magnetic field in the mass spectrometer? Explain briefly, stating any assumption made. 15 marks]

Answer 1

B. 1. the type of inter atomic forces is covalent force that is covalent bond between the atoms of carbon and hydrogen.

2. The intermolecular forces between the atoms of hexane is dispersion forces.

-H Dispersion I-0-I I-0-I C-H I-0-I I-0-I I-0-I I-0-I I-0-I I-0-I I-0-I I-0-I H-C I-0-I I-0-I H-C

3. Hexane is not a good conductor of electricity e because it is not polar in nature and also it does not ionizes and water to give ions and to be a good conductor of electricity we need ions.

4. Another substance that will behave the same way as hexane is pentane or heptane. They are the same member of homologus series of alkanes