Question

Q3. The concentration of aqueous magnesium is to be determined by flame absorption spectrometry.

(a) Which chemical form of Mg (i.e. oxidation state and bound chemical species) is present in the solution?

(b) What chemical form of Mg is measured in the flame, and what reactions or processes occur in the flame to produce it?

(c) What further, undesirable reactions are possible involving Mg. How can production of these side products be minimised?

(d) Are the atomic spectra of Mg0 , Mg+ and Mg2+ the same? Why, or why not?

(e) The first ionisation potential of Mg is 7.65 eV, while the second is 15.04 eV. Comment briefly on the relative proportions of atomic Mg0 , Mg+ and Mg2+ likely to be found in the measurement region of the flame.

Can you help me solve the questions? short answer, please

Answer 1