MEDIUM
AS and A Level
IMPORTANT
Earn 100

Working with a partner, discuss what you would see in a test tube in which concentrated sulfuric acid is added drop-wise to solid potassium iodide that you would not see if the acid was added to potassium chloride.

Important Questions on Group 17

MEDIUM
AS and A Level
IMPORTANT
Write equations, including state symbols to describe the reactions taking place in the test tube between concentrated sulfuric acid and potassium iodide.
EASY
AS and A Level
IMPORTANT

Decide with your partner which one of the following ions is the strongest reducing agent:

EASY
AS and A Level
IMPORTANT
  Reactant Product
A 2Cl- Cl2
B Cl- ClO-
C ClO3- Cl2
D ClO- ClO3-

Which conversion of reactant to product, A to D, involves the greatest change in oxidation state?

 

MEDIUM
AS and A Level
IMPORTANT
  Reactant Product
A 2Cl- Cl2
B Cl- ClO-
C ClO3- Cl2
D ClO- ClO3-
How many of the changes in the table are examples of oxidation?
MEDIUM
AS and A Level
IMPORTANT
List the elements bromine, chlorine, and iodine in order of boiling point, starting with the lowest.
EASY
AS and A Level
IMPORTANT

Identify which of these mixtures will result in a chemical reaction:

i. bromine solution and sodium chloride solution

ii. iodine solution and sodium bromide solution

iii. chlorine solution and potassium bromide solution

iv. bromine solution and sodium iodide solution

MEDIUM
AS and A Level
IMPORTANT

Write a balanced chemical equation for each reaction that occurs in the following:

i. bromine solution and sodium chloride solution

ii. iodine solution and sodium bromide solution

iii. chlorine solution and potassium bromide solution

iv. bromine solution and sodium iodide solution