GCSE Chemistry Question Analysis Topic: Chemistry - Short Questions
Exam Questions:
1) Draw the structures of the following:
(i) XeF2 (ii) BrF3
2) (i) What type of non-stoichiometric point defect is responsible for the pink colour of LiCl?
(ii) What type of stoichiometric defect is shown by NaCl?
3) The conversion of primary aromatic amines into diazonium salts is known as ______.
Answers:
For GCSE Chemistry, you should know:
1) The following are the structures:
2) (i) The pink colour of LiCl is a result of the metal excess defect that is caused by anionic vacancies.
(ii) In NaCl, the Schottky defect can be found. Here, an equal number of cations and anions are both missing from their usual positions.
3) Such conversion is known as diazotisation.
In cold conditions, arylamines react with nitrous acid to produce arenadiazonium salts.
Such salts are stable only for a moment, slowly decomposing even at low temperatures.
Work hard for your GCSE Chemistry examination!
End of analysis. Great!
