Chemistry 9701 · AS & A Level · Chemistry of transition elements

Chemistry of transition elements — practice question

(a(i))[1]

What does the term ligand mean in transition element chemistry?

(a(ii))[3]

Decide which of the species listed below could act as a ligand, and which could not. Put a tick $(\checkmark)$ in the correct column. $\text{OH}^-$ $\text{NH}_4^+$ $\text{CH}_3\text{OH}$ $\text{CH}_3\text{NH}_2$

(b(i))[4]

Suggest the formula of the substance in each of the following. solution C solid D solution E white precipitate F

(b(ii))[1]

Name the type of reaction that occurs when D is mixed with $\text{HNO}_3(aq)$.

(b)

Read the description below of some reactions of copper(II) sulfate, and then answer the questions that follow.

(c(i))[1]

Describe what you would observe when a solid sample of anhydrous $\text{Cu(NO}_3)_2$ is heated strongly.

(c(ii))[1]

Write an equation to represent this reaction.

Worked solution & mark scheme

This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: A ligand has a lone pair of electrons to donate, or it forms a dative bond to a transition element

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