halogens and h2so4

Question 1

Sodium Bromide acid base step

Answer 1

NaBr + H2SO4 = NaHSO4 + HBr white steamy fumes of HBr

Question 2

Sodium Bromide redox step

Answer 2

2HBr + H2SO4 = Br2 + SO2 + 2H2O orange fumes of bromine gas

Question 3

Sodium bromide oxidation half equation

Answer 3

2Br- = Br2 + 2e-

Question 4

sodium bromide reduction half equation

Answer 4

H2SO4 + 2H+ +2e- = SO2 + 2H2O

Question 5

sodium iodide and H2SO4 four equations

Answer 5

NaI + H2SO4 = NaHSO4 + HI
2HI + H2SO4 = I2 + SO2 + 2H2O
6HI + H2SO4 = 3I2 + S + 4H2O
8HI + H2SO4 = 4I2 + H2S + 4H2O

Question 6

oxidation half equation of sodium iodide and h2so4

Answer 6

2I- = I2 + 2e-

Question 7

three reduction half equations for sodium iodide + h2so4

Answer 7

H2SO4 + 2H+ + 2e- = SO2 + 2H2O
H2SO4 + 6H+ + 6e- = S + 4H2O
H2SO4 + 8H+ + 8e- = H2S + 4H2O