Eduqas A Level Chemistry
Eduqas A Level Chemistry PI2.1 Chemistry of the p-block Exam Questions
Free Eduqas A Level Chemistry exam questions on PI2.1 Chemistry of the p-block, with mark schemes. Covers group 3, 4 and 7 chemistry, inert pair effect, amphoteric oxides and the halogens.
PI2.1 Chemistry of the p-block exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
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A Level Chemistry Flashcards
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About Eduqas A Level Chemistry PI2.1 Chemistry of the p-block
This topic covers trends in the p-block.
What you need to know
- Inert pair effect Lower oxidation states become more stable down groups 3 and 4, for example Pb(II).
- Amphoteric behaviour Aluminium and lead oxides react with acids and bases.
- Group 3 Electron-deficient compounds such as BCl₃ and AlCl₃ dimers.
- Group 7 Halogen redox chemistry and reactions of halides with concentrated sulfuric acid.
Common mistakes in PI2.1 Chemistry of the p-block
- Forgetting the +2 state is more stable for lead.
- Confusing amphoteric with neutral.
- Not explaining why HI reduces sulfuric acid further than HCl.
Try three PI2.1 Chemistry of the p-block exam-style questions
1. Define amphoteric. (1 mark)
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Able to react as both an acid and a base.
2. Explain why PbO₂ is a strong oxidising agent. (2 marks)
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The +2 oxidation state of lead is more stable (1) due to the inert pair effect, so Pb(IV) is readily reduced (1).
3. Explain why AlCl₃ forms a dimer. (2 marks)
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Al is electron deficient (1), so a lone pair from Cl on another molecule forms a dative bond (1).
PI2.1 Chemistry of the p-block FAQs
What does Chemistry of the p-block cover?
Trends in groups 3, 4 and 7, the inert pair effect and amphoterism.
Which practical links here?
Reactions of halides with concentrated sulfuric acid.
What is the inert pair effect?
The reluctance of the s electrons to take part in bonding down a group.
Revise this topic with flashcards: A Level Chemistry Flashcards, with mark scheme answers for Anki and Quizlet.
