Reading Comprehension
Questions about the text
“Bismuth in the Oxidation State One-Fourth. The Entity [Bi 8]2+ Formed in Molten AlCl3-NaCl Media”
0. What branch of chemistry is this text from ?
- Inorganic nuclear chemistry
1. What type of text is this?
- Research article in a journal
2. What is the name of the periodical, what is the date of publication, what are the name of the authors, and what is their affiliation?
- Inorganic Nuclear Chemical Letters
- 1967
- Niels J. Bjerrunt, G. Pedro Smith
- Metals and Ceramics Division, Oak Ridge National Laboratory
3. Originally, what were the entities of Bi+ and [Bi5]3+ said to have been formed from?
- formed by reaction between bismuth metal and dilute solutions of bismuth trichloride in liquid AlCl3-NaCl and ZnCl2-KCl eutectic mixtures
4. According to these earlier publications, what happened when more bismuth metal than usual was used?
- a third reaction product appeared, where [Bi8]2+ was formed
5. What experimental procedure was followed in order to achieve the presence of a separate phase of bismuth metal?
6. What yields are achieved if lesser amounts of bismuth metal are used?
7. What does the plot in Fig. 1 depict?
8. What is formal absorptivity in this figure NOT based on?
9. In this figure, how can absorbance be characterized?
10. What was the conclusion from the graph regarding reaction products?
11. What did measurements of the amounts of bismuth metal and BiCl3 which reacted establish?
12. How may the molar absorptivity of [Bi8]2+ be obtained?
13. To establish the polymerization number, n, particular conditions had to be found. What were they (a) in general and (b) in particular?
14. In the case of more than enough bismuth metal, what was the consequence for an important feature of the reaction products?
15. What did the analysis of the 3 plot lines show?
16. The authors suggest the dominant product formed is [Bi4n]n+ . What do they base their claim on?
17. Eventually, what do they say the ordinate scale may be converted to, and how is this to be achieved?