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WalesChemistryQuick questions
Unit 3: Physical and Inorganic Chemistry
Quick questions on Chemistry of the d-block - WJEC A-Level Chemistry
6short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is haemoglobin?Show answer
Iron(II) in haemoglobin forms a complex with oxygen as a ligand; carbon monoxide binds more strongly to the same site, which is why it is toxic, a biological complex-ion example. Industrial catalysts. Iron (Haber), vanadium(V) oxide (Contact) and nickel (hydrogenation) all rely on variable oxidation states, central to large-scale chemical manufacture.
What is q1?Show answer
Define a complex ion. [1 mark]
What is q2?Show answer
State the coordination number and shape of . [1 mark]
What is q3?Show answer
Explain why solutions are colourless. [1 mark]
What is q4?Show answer
State two factors that affect the colour of a transition metal complex. [2 marks]
What is q5?Show answer
Explain why transition metals can act as catalysts. [1 mark]
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