Lesson 4B.1
4B.1 Group 7 trends and halogen reactions Quiz: Pearson Edexcel Chemistry, Unit 4
20 questions
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Lesson 4B.1, Group 7 trends and halogen reactions: 20 multiple choice questions for the Pearson Edexcel Chemistry (9CH0), Unit 4: Inorganic Chemistry and the Periodic Table, written with Revision Ninja.
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The 20 questions
-
Why do melting temperatures of halogens increase down Group 7?
- Stronger ionic bonds
- Stronger covalent bonds
- Weaker London forces
- Stronger London forces
-
How does electronegativity change down Group 7?
- Increases
- Decreases
- Fluctuates
- Remains constant
-
Why does the oxidising ability of halogens decrease down Group 7?
- Increased atomic shielding
- Decreased atomic radius
- Higher electronegativity
- Increased nuclear attraction
-
What colour change is seen when chlorine water is added to aqueous potassium bromide?
- Turns orange
- Turns purple
- Turns pale green
- Remains colourless
-
Which ionic equation shows chlorine oxidising aqueous bromide ions?
- Cl2 + 2Br- -> 2Cl- + Br2
- Cl2 + Br- -> Cl- + Br2
- 2Cl2 + Br- -> 4Cl- + Br2
- Cl2 + 2Br- -> 2Cl- + 2Br
-
What colour is iodine when dissolved in an organic solvent like hexane?
- Pale yellow
- Orange
- Purple
- Brown
-
What is the oxidation number change when chlorine reacts with a Group 1 metal?
- -1 to 0
- +1 to 0
- 0 to -1
- 0 to +1
-
Which equation shows the disproportionation of chlorine with water?
- Cl2 + H2O -> HCl + HOCl
- Cl2 + 2H2O -> 2HCl + H2O2
- Cl2 + H2O -> HCl + HClO2
- Cl2 + H2O -> 2HCl + O2
-
Which chlorine-containing product forms alongside sodium chloride when chlorine reacts with cold, dilute aqueous sodium hydroxide?
- Sodium chlorate(VII)
- Sodium chlorate(I)
- Sodium chlorate(III)
- Sodium chlorate(V)
-
Which chlorate compound forms when chlorine reacts with hot, concentrated sodium hydroxide solution?
- Sodium chlorate(V)
- Sodium chlorate(III)
- Sodium chlorate(VII)
- Sodium chlorate(I)
-
Which disinfectant species forms when chlorine gas dissolves in water?
- Chlorine dioxide
- Hydrochloric acid
- Chloric(I) acid
- Chloric(V) acid
-
Which Group 1 halide with concentrated sulfuric acid gives hydrogen iodide that is further reduced to iodine?
- Sodium fluoride
- Sodium chloride
- Sodium bromide
- Sodium iodide
-
What is the order of reducing ability of the hydrogen halides?
- HBr > HI > HCl
- HI > HBr > HCl
- HCl > HBr > HI
- HF > HCl > HBr
-
Which precipitate forms when silver nitrate is added to aqueous chloride ions?
- Yellow silver iodide
- White silver chloride
- Cream silver bromide
- Green silver fluoride
-
Which silver halide dissolves in dilute aqueous ammonia?
- Silver chloride
- Silver iodide
- Silver fluoride
- Silver bromide
-
Which silver halide is insoluble even in concentrated aqueous ammonia?
- Silver iodide
- Silver bromide
- Silver chloride
- Silver nitrate
-
What white solid forms when hydrogen chloride gas reacts with ammonia gas?
- Ammonium sulfate
- Ammonium chlorate
- Ammonium chloride
- Aluminium chloride
-
Which type of solution is formed when hydrogen halides dissolve in water?
- Alkaline solution
- Amphoteric solution
- Neutral solution
- Acidic solution
-
Predict the physical state of astatine at room temperature.
- Gas
- Vapour
- Liquid
- Solid
-
Which structural property contributes significantly to the high reactivity of fluorine gas?
- Low electronegativity
- Weak F-F bond
- High lattice energy
- Strong F-F bond
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