Sodium Halides and Conc Sulphuric Acid

Question 1

What is produced when NaF and H2SO4 react together?

Answer 1

Nothing as they will not react

Question 2

What is produced when NaCl and H2SO4 react together?

Answer 2

HCl and NaHSO4

Question 3

What observations are made in the reaction between NaCl and H2SO4?

Answer 3

Steamy fumes of HCl will be given off

Question 4

What is produced when NaBr and H2SO4 react together?

Answer 4

HBr and NaHSO4

Question 5

What observations are made in the reaction between NaBr and H2SO4?

Answer 5

Steamy fumes of HBr given off

Question 6

What is the redox reaction that occurs when 2Br- ions react with H2SO4?

Answer 6

2H+ + 2Br- + H2SO4 -> BR2 + SO2 + 2H2O

Question 7

What are the observations made during the redox reaction that occurs when 2Br- ions react with H2SO4?

Answer 7

Brown fumes of Br2 and colourless fumes of SO2

Question 8

What is produced when NaI and H2SO4 react together?

Answer 8

HI and NaHSO4

Question 9

What observations are made in the reaction between NaI and H2SO4?

Answer 9

Steamy fumes of HI given off

Question 10

What is the redox reaction that occurs when 2I- ions react with H2SO4?

Answer 10

2H+ + 2I- + H2SO4 -> I2 + SO2 + 2H2O

Question 11

What are the observations made during the redox reaction that occurs when 2I- ions react with H2SO4?

Answer 11

Purple fumes of I2 and colourless gas of SO2

Question 12

What is the redox reaction that occurs when 6I- ions react with H2SO4?

Answer 12

6H+ + 6I- + H2SO4 -> 3I2 + S + 4H2O

Question 13

What are the observations made during the redox reaction that occurs when 6I- ions react with H2SO4?

Answer 13

Purple fumes of I2 and yellow solid of S

Question 14

What is the redox reaction that occurs when 8I- ions react with H2SO4?

Answer 14

8H+ + 8I- + H2SO4 -> 4I2 + H2S + 4H2O

Question 15

What are the observations made during the redox reaction that occurs when 8I- ions react with H2SO4?

Answer 15

Purple fumes of I2 and pungent gas of H2S