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Home arrow Student Resources arrow Chapter 7: Acids, bases and ions in aqueous solution 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
1 The pKa of HNO2 is 3.37. The pH of a 0.01 mol dm–3 aqueous solution of HNO2 is:
 
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Question 2
2 Which statement is incorrect about water and ice?
 
End of Question 2


Question 3
3 The conjugate base of [H2PO4]– is:
 
End of Question 3


Question 4
4 Which of the following statements is incorrect about oxalic acid (H2C2O4) for which Ka(1) = 5.9 x 10–2 and Ka(2) = 6.4 x 10–5?
 
End of Question 4


Question 5
5 Which statement is incorrect?
 
End of Question 5


Question 6
6 [Fe(OH2)6]3+ is prepared in acidic solution because:
 
End of Question 6


Question 7
7 Ksp for Mg(OH)2 is 5.61 x 10–12. The solubility of Mg(OH)2 is therefore:
 
End of Question 7


Question 8
8 The Gibbs energy change for KCl(s) → KCl(aq) at 298 K is given by:
 
End of Question 8


Question 9
9 Which statement about AgCl is incorrect?
 
End of Question 9


Question 10
10 Which statement is incorrect about the formation of [Co(NH3)6]2+ from [Co(OH2)6]2+?
 
End of Question 10


Question 11
11 The conjugate acid of [Ti(OH2)5(OH)]2+ is:
 
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Question 12
12 At 298 K, the solubility of AgCl is 1.33 x 10–5 mol dm–3. This can also be expressed (at 298 K) as:
 
End of Question 12


Question 13
13 At 298 K, the standard enthalpy change for the process: Na+(g) → Na+(aq) is:
 
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Question 14
14 The ligand 1,10-phenanthroline (phen) is typically:
 
End of Question 14


Question 15
15 In the complex [K(18-crown-6)]+, the number of 5-membered chelate rings that are formed is:
 
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Question 16
16 When [EDTA]4- coordinates to a metal ion, M2+, to give [M(EDTA)]2-, the number of chelate rings formed is:
 
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Question 17
17 Within the HSAB principle, a hard acid:
 
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Question 18
18 Cysteine is an amino acid with an S-donor atom (see Table 29.2 in Inorganic Chemistry). For complexes of cysteine with Fe2+, Hg2+, Mg2+ and Zn2+, values of log K1 are 6.2, 14.4, <4 and 9.8. Unfortunately, the data have been muddled up. Which set of assignments do you think is the correct one?
 
End of Question 18


Question 19
19 The ligands [O2C(CH2)nCO2]2- for n = 0, 1, 2 and 3 form complexes with Zn2+. How do you expect values of log K1 to vary with n?
 
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Question 20
20 For the substitution of one H2O ligand in [Al(OH2)6]3+ by F-, log K1 = 6.10 at 298 K. The value of ΔGo for this process is:
 
End of Question 20







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