International ASChemistryEdexcelExam Questions2. Energetics, Group Chemistry, Halogenoalkanes and Alcohols2.5 Group 7

Group 7 (Edexcel International AS Chemistry)

Exam Questions

Select a question set to download for
2.5 Group 7

Select an answer set to view for
2.5 Group 7

Easy
Medium
11 mark

Which statement about the Group 7 elements chlorine, bromine and iodine is not correct?

  • boiling temperature increases down the group

  • reactivity increases down the group

  • first ionisation energy decreases down the group

  • electronegativity decreases down the group

Choose your answer

Did this page help you?

21 mark

Which silver halides are soluble in concentrated aqueous ammonia?

  • AgBr and AgI

  • AgCl and AgI

  • AgCl and AgBr

  • AgCl only

Choose your answer

Did this page help you?

1a1 mark

This question is about the reaction of potassium iodide with concentrated sulfuric acid.

a)
Which of these would not be seen?

  • misty fumes

  • black solid

  • yellow solid

  • dense white smoke

Choose your answer

1b
Sme Calculator1 mark
b)
One of the reaction products is the gas H2S.
What is the change in oxidation number of sulfur as H2S forms?

  • −8

  • −6

  • −2

  • +6

Choose your answer

Did this page help you?

21 mark

Which of these increases as Group 7 is descended?

  • oxidising ability of the molecular halogens

  • reducing ability of the halide ions

  • electrostatic attraction between the nucleus and outer shell of electrons

  • electronegativity of the halogen atoms

Choose your answer

Did this page help you?

31 mark

When iodine is dissolved in a non-polar organic solvent, the solution formed is

  • purple

  • orange

  • colourless

  • brown

Choose your answer

Did this page help you?

4
Sme Calculator1 mark

Four tests used to identify ions are shown:

1   flame test
2   addition of acidified barium nitrate solution
3   addition of acidified silver nitrate solution
4   addition of sodium hydroxide solution, then testing any gas with indicator paper

Which tests could be used to positively identify the ions in ammonium chloride?

  • 1 and 2

  • 1 and 3

  •  2 and 4

  • 3 and 4

Choose your answer

Did this page help you?

51 mark

Solid potassium bromide reacts with concentrated sulfuric acid.

Which of these substances does not form?

  • bromine

  • hydrogen bromide

  • hydrogen sulfide

  • sulfur dioxide

Choose your answer

Did this page help you?