G11 Structure 1 and Structure 2
1.
[37 marks]
[Maximum mark: 1]
2.67 g of lead (II) carbonate is decomposed by heating until constant
mass.
22M.1.hl.TZ1.1
PbCO3 (s) → PbO (s) + CO2 (g)
What is the final mass of solid?
A. 0.44 g
B. 2.23 g
C. 2.67 g
D. 3.11 g
2.
[Maximum mark: 1]
0.02 mol of zinc is added to 10.0 cm3 of 1.0 mol dm–3 hydrochloric acid.
[1]
22M.1.hl.TZ1.2
Zn (s) + 2HCl (aq) → ZnCl2 (aq) + H2 (g)
How many moles of hydrogen are produced?
A. 0.005
B. 0.01
C. 0.02
D. 0.04
[1]
3.
[Maximum mark: 1]
What are the electron domain and molecular geometries of the CF4
molecule?
22M.1.hl.TZ1.13
[1]
4.
[Maximum mark: 1]
In which of the following compounds does ionic bonding
predominate?
22M.1.hl.TZ2.9
A. HCl
B. NaF
C. NH4Br
D. NaOH
[1]
5.
[Maximum mark: 1]
3.00 mol of C3H8 is mixed with 20.00 mol of O2. Which quantity is
present at the end of the reaction?
21N.1.hl.TZ0.2
C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (g)
A. 1.00 mol of C3H8
B. 5.00 mol of O2
C. 12.00 mol of CO2
D. 16.00 mol of H2O
6.
[1]
[Maximum mark: 1]
Which species has two more neutrons than electrons?
6
Li
+
9
Be
3
4
A.
6
B.
9
C.
23
D.
42
Li
2+
23
Na
11
+
42
Ca
21N.1.hl.TZ0.4
2+
20
+
3
Be
2+
4
Na
+
11
Ca
20
2+
[1]
7.
[Maximum mark: 1]
A sample of a compound contains approximately 24.0 g C, 3.0 g H, and
1.6 g O. What is the empirical formula of the compound?
21M.1.hl.TZ1.2
A. C20H30O
B. C84H10O6
C. C2H3O
D. C24H30O2
8.
[Maximum mark: 1]
Which atom has a linear geometry?
[1]
21M.1.hl.TZ2.12
A. C in CO2
B. S in SCl4
C. O in H2O2
D. P in PCl3
[1]
9.
[Maximum mark: 1]
Which diagram represents a heterogeneous mixture?
19M.1.hl.TZ1.1
[1]
10.
[Maximum mark: 1]
What is the ground state electron configuration of an atom of
chromium, Cr (Z = 24)?
19M.1.hl.TZ1.4
A. [Ar]3d6
B. [Ar]4s23d4
C. [Ar]4s13d5
D. [Ar]4s24p4
[1]
11.
[Maximum mark: 1]
What is the sum of the integer coefficients when propene undergoes
complete combustion?
19M.1.hl.TZ2.2
__C3H6 (g) + __O2 (g) → __CO2 (g) + __H2O (l)
A. 11
B. 17
C. 21
D. 23
12.
[Maximum mark: 1]
What is the volume of gas when the pressure on 100 cm3 of gas is
changed from 400 kPa to 200 kPa at constant temperature?
[1]
19M.1.hl.TZ2.3
A. 50.0 cm3
B. 100 cm3
C. 200 cm3
D. 800 cm3
[1]
13.
[Maximum mark: 1]
19M.1.hl.TZ2.4
Which is correct for 16 S
34
2−
?
[1]
14.
[Maximum mark: 1]
What is the pressure, in Pa, inside a 1.0 m3 cylinder containing 10 kg of
H2 (g) at 25 ºC?
17N.1.hl.TZ0.3
R = 8.31 J K–1 mol–1; pV = nRT
4
A.
1×10 ×8.31×25
B.
5×10 ×8.31×298
C.
1×8.31×25
D.
5×10 ×8.31×298
1.0×10
3
2
1.0
1.0×10
3
3
1.0
[1]
15.
[Maximum mark: 1]
How does a lithium atom form the most stable ion?
19M.1.hl.TZ2.9
A. The atom gains a proton to form a positive ion.
B. The atom loses a proton to form a negative ion.
C. The atom loses an electron to form a positive ion.
D. The atom gains an electron to form a negative ion.
16.
[Maximum mark: 1]
A compound with Mr = 102 contains 58.8 % carbon, 9.80 % hydrogen
and 31 % oxygen by mass.
What is its molecular formula?
[1]
17N.1.hl.TZ0.4
Ar: C = 12.0; H = 1.0; O = 16.0
A. C2H14O4
B. C3H4O4
C. C5H10O2
D. C6H14O
[1]
17.
[Maximum mark: 1]
How much ethanol contains 1.20 × 1024 atoms of carbon?
21N.1.hl.TZ0.1
Avogadro’s constant, L or NA: 6.02 × 1023 mol−1
A. 0.333 mol
B. 0.500 mol
C. 1.00 mol
D. 2.00 mol
[1]
18.
[Maximum mark: 3]
Lignite, a type of coal, contains about 0.40 % sulfur by mass.
(a)
(b)
22N.2.hl.TZ0.5
Calculate the amount, in mol, of sulfur dioxide produced when
500.0 g of lignite undergoes combustion.
S (s) + O2 (g) → SO2 (g)
[2]
Deduce the Lewis (electron dot) structure for sulfur dioxide.
[1]
19.
[Maximum mark: 5]
Consider the following reaction:
22N.2.hl.TZ0.3
Cu2+ (aq) + Fe (s) → Fe2+ (aq) + Cu (s)
(a)
State the ground-state electron configuration for Fe2+.
(b)
The mass spectrum for copper is shown:
[1]
Source: WebElements, n.d. Copper: isotope data [online] Available at:
https://www.webelements.com/copper/isotopes.html [Accessed 6 October 2021].
Show how a relative atomic mass of copper of 63.62 can be
obtained from this mass spectrum.
[1]
(c)
Predict, with a reason, whether Cu or Cu2+ has the greater
ionization energy.
[1]
20.
[Maximum mark: 4]
Iron(II) disulfide, FeS2, has been mistaken for gold.
(a(i))
State the full electronic configuration of Fe2+.
22M.2.hl.TZ2.5
[1]
(a(ii) Sulphur can form a molecule carbon disulphide, CS2. Sketch the bonding
diagram and predict the electron domain geometry, molecular shape, bond angle
and polarity of the molecule.
[5]
21.
[Maximum mark: 8]
White phosphorus is an allotrope of phosphorus and exists as P 4.
(a(i))
21N.2.hl.TZ0.3
Sketch the Lewis (electron dot) structure of the P 4 molecule,
containing only single bonds.
[1]
(a(ii)) Write an equation for the reaction of white phosphorus (P 4)
with chlorine gas to form phosphorus trichloride (PCl3).
[1]
(a(iii)) Deduce the electron domain and molecular geometry using
VSEPR theory, and estimate the Cl–P–Cl bond angle in PCl3.
[3]
a(iv) Outline the reason why PCl is a polar molecule, while BCl3 is non3
polar
[3]