Advanced level 2025 South West mock Chemistry 1
Advanced level 2025 South West mock Chemistry 1
Question : Each 1-3 7of(thirty thequestions -seven questions or incomplete ) *!l contains 0.05 mol of th= gas m a volumeof S
statements in this section is followed by four
suggested answers. Select the best answer in eaclj
case.
dm3 at
30°C. R =
– i
= n 087.1atmdirhmollLH
0 1 6 atmosphere
“
0 07. atmosphere
C 0.61 atmosphere
lTJo^6 atmosphere
g ]^ntif^rdie^mducts-fbnped
_
when potassium
nirratf. fKNOi) is heatedstrongly
KNOf and O2
R K2O, NOz and O2
Cf KNO2 , NOz and O2
D
~
KNO2 and O2
AB
1 . Which one of the following is affected when an
? atom forms an ion
The atomic number.
The mass number.
AB
C The number of neutrons.
A
D The number of electrons.
2. Identify which of the acid-base property of group
IV oxides is correct
9 A^hcndst- needs
~
200 litres of 0.5 M HC1. What
volume of 12 M must be dissolved in water to form
this solution?
A CO and SiO are acidic
Ge02 and SnO? are neutral
PbO and SnO are amphoteric
BC
D CO2 and Si02 are basic
A 0.83 litres
B 3.8 litres
3. Why do transition metals form complexes?
C 4,800 litres
A They are coloured D 8.3 litres
The energy difference between 3d and 4s
orbitals is very close
They have variable oxidation states
They have available d-orbitals to
accommodate electrons
B
10. The definition “ It is a solution that contains one
mole of solute dissolved in one litre of solution’’
refers to
CD
A Saturated solution
B Standard solution
4. The empirical formula of vitamin C is CH2O. If
its molar mass is 180, what is its molecular formula? C Molar solution
D Dilute solution
A C6H12O2
11. For the reaction: A + 2B — > C, the following
data were obtained:
B C2H6O2
C CH2O
D C6Hl206 Exp’t [A] mol/di [B] mol/dm Relative rate
1 0.10 0.10 0.001
5. Which one of the following is a property of Ionic 2 0.10 0.20 0.004
compounds? 3 0.20 0.10 0.001
The reaction is:
They are made up of atoms—
Good conductors of electricity
A First order with respect to B
Second order with respect to B
First order with respect to A
A
B B
C Their solutions conduct electricity C
D They dissolve in CCU D Overall, third order.
6. The first four successive ionization energies of an
element W in KJmol”1 are: 900, 1758, 14905, 21060.
From the values it can be predicted that
A The element has three electrons in its
outermost shell
R The third electron is found in the
innermost shell closer to the nucleus
The element has one electron in its
outermost shell
D The first and ^econ7i electrons arc not in
