Question 1a
a)
An acid base reaction occurs for the reaction between solid potassium bromide and concentrated sulfuric acid. The equation for this is:
2H2SO4 (aq) + 2KBr (s) → K2SO4 (aq) + SO2 (g) + Br2 (g) + 2H2O (l)
In this reaction redox products are also formed. List all of the redox products produced from the reaction between solid potassium bromide and concentrated sulfuric acid and give observations for any products.
[2]
Question 1b
b)
Explain why the reaction between solid potassium iodide and concentrated sulfuric acid produces hydrogen sulfide whereas the reaction between solid potassium bromide, and concentrated sulfuric acid does not.
[4]
Question 1c
c)
Hydrogen halides, H-X, are formed from the reaction of hydrogen and a halogen, X2. In solution hydrogen fluoride is classed as a weak acid, whereas HCl is classed as a strong acid. Explain this difference.
[2]
