Reaction between Halides and Concentrated Sulfuric Acid Flashcards
What can halide ions do?
= donate their electrons to another species
= reducing agent
What happens do the reducing agent as we go down the group for halides?
= increases
= sheilding increases
= protons increases
= size of atom increases
What happens when we react a metal halide and concentrated sulfuric acid?
= forms metal hydrogen sulfate XHSo4
= and hydrogen halogen
Which halide ion is the most powerful reducing agent?
= iodide
What can iodide reduce sulfuric acid into?
= sulfur can be reduced from +6 to +4 making So2- gas
= can be reduced to 0 making s8- yellow solid
= can be reduced to -2 to make H2s gas rotten egg smell `
What can iodide reduce sulfuric acid into?
= sulfur can be reduced from +6 to +4 making So2- gas
= can be reduced to 0 making s8- yellow solid
= can be reduced to -2 to make H2s gas rotten egg smell `
What is the acid base reaction between sodium bromide and sulfuric acid?
= forms sodium hydrogen sulfate and hydrogen bromide
What is the redox reaction that happens between sodium bromide and sulfuroc acid?
= bromide ion reduces the sulfuric acid into forming sulfur dioxide and bromine (orange)
What is the acid base reaction between sodium iodide and sulfuric acid?
= forms sodium hydrogen sulfate and hydrogen iodide
What is the acid base reactions for flouride and chloride?
= Naf + H2SO4 ==> NaHSo4 + Hf
observation: white steamy fumes of HF
Nacl + H2SO4 ==> NaHCl + Hcl
= white steamy fumes of hcl gas
What is the acid base reaction of bromine?
= NaBr + H2SO4 ==> NaHSo4 + HBr
What is the redox reaction for bromide ions?
= 2H+ + 2 Br + H2SO4 ==> Br2 + SO2 + 2 H2O
What is the overall equation for bromide ions with sulfuric acid?
= 2NaBr + 3H2So4 ==> 2NaHSO4 + SO2 + 2H2O
What are the reactions for iodine?
NaI(s) + H2SO4
(l) ==> NaHSO4
(s) + HI(g)
2 H+ + 2 I- + H2SO4 ==> I2
(s) + SO2
(g) + 2 H2O(l)
6 H+ + 6 I- + H2SO4 ==> 3 I2 + S (s) + 4 H2O (l)
8 H+ + 8 I- + H2SO4 ==> 4 I2
(s) + H2S(g) + 4 H2O(l)
