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Home  arrow Student Resources  arrow Chapter 26: d-Block metal complexes: reaction mechanisms  arrow Multiple choice questions

Multiple choice questions

For some of these questions, you need data from the appendices of Inorganic Chemistry, third edition by C.E. Housecroft and A.G. Sharpe. On opening the book cover you will find a periodic table and a list of elements and atomic masses. Physical constants are listed on the back inside cover of the book.

Multiple choice questions by Catherine E. Housecroft.



This activity contains 20 questions.

Question 1.
Which ion is kinetically inert?

 
End of Question 1


Question 2.
Which statement is correct?

 
End of Question 2


Question 3.
The reactions of [PtCl4]2– with NH3 (reaction I) and of [PtCl4]2– with [NO2] followed by NH3 (reaction II) are ways of preparing:

 
End of Question 3


Question 4.
Which statement about the trans-effect and the trans-influence is correct?

 
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Question 5.

The usual form of the experimental rate law for substitution in square planar Pt(II) complexes contains two terms:
Rate = k1[PtL3X] + k2[PtL3X][Y]
where PtL3X is the starting complex and Y is the entering group. The reason for the two-term law is that:
 
End of Question 5


Question 6.
Which ordering correctly shows the variation in rates of water exchange in high-spin aqua complexes [M(OH2)6]n+?

 
End of Question 6


Question 7.
The first step in the Eigen-Wilkins mechanism for ML6 undergoing Y for L substitution is:

 
End of Question 7


Question 8.
Marcus-Hush theory applies to:

 
End of Question 8


Question 9.
Racemization of a chiral complex such as [Cr(ox)3]3– is least likely to occur by:

 
End of Question 9


Question 10.
Which statement is incorrect about the mechanisms of electron transfer?

 
End of Question 10


Question 11.
In the base-catalysed substitution of Cl by [OH] in [Co(NH3)5Cl]2+ under strongly basic conditions, the first step in the mechanism is:

 
End of Question 11


Question 12.
In an inner-sphere electron transfer reaction, which of the following ligands could not act as a bridging ligand?

 
End of Question 12


Question 13.
Which ordering correctly describes the tendency of a ligand to direct ligand substitution in a square planar complex to a position opposite to itself?

 
End of Question 13


Question 14.
Anation is:

 
End of Question 14


Question 15.
Which experimental technique operates on the fastest timescale?

 
End of Question 15


Question 16.
Three of the following ions are kinetically inert, one is labile. Which ion is labile?

 
End of Question 16


Question 17.
For a ligand substitution reaction, which statement about the volume of activation is correct?

 
End of Question 17


Question 18.
The average residence time for an H2O molecule in the first coordination sphere of [Cs(OH2)8]+ is approximately 10-10 s. The value of the water exchange rate constant is therefore:

 
End of Question 18


Question 19.
The kinetics of the isomerization of cis to trans-[Mo(CO)4(PEt3)2] can be followed by IR spectroscopy. Which of the following regions of the IR spectrum would you focus on to monitor the reaction?

 
End of Question 19


Question 20.
An Eyring plot allows you to find the activation parameters ΔH and ΔS from the temperature (T) dependence of the rate constant (k). What would you plot against what in a typical Eyring graph?

 
End of Question 20





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