Advanced level 2023 south west regional mock chemistry 1
Advanced level 2023 south west regional mock chemistry 1
Questions 1-37{Thirty-seven questions).
Directions:Each of the questions or incomplete
statements In this section is followed by four
suggested answers.Select the best answer in each
case.
1. A molar solution is:
A. A solution of 1 mol of solute dissolve in 1 dm of
solvent.
B. A solution of 1 mol of solute dissolve in 1 kg of
solvent
C. A solution of 1 mol of solute dissolve in 1 dm of
solution.
D. A solution of 1 gram of solute dissolve in 1 dm
of solution.
2. Identify the hybridization of carbon in the following
molecule.
7 8
. The general outer electronic configuration of the
group V clement is?5.
Bromine can be produced from the following
reaction;
5Br'(aq) + BtO*(aq) + 6H* (aq) ->3Brj(1)+ 3H20 0)
Which two methods that could be used to monitor
the rate of the reaction?
A. Conductivity and dilatometry
B.
. Colorimetry and dilatometry
C. Cooductimetiy and Colourimetry
D. Titrimetry and dilatometry
16. Analysis of 2.20 g of a compound of phosphorus
and sulphur showed (hat it contained 1.24 g of
phosphorus. The empirical formula of the compound
___ ® r
|
(RAM:P = 31, S= 32),
A. P2S
is?
B. P4Sj
C. P»S4
D. P2S,
17.Identify the particle X in the nuclear reaction
* H e + -*\I I + X by giving its mass number and
atomic number.
. A. 17 and 8 respectively
B. * 19 and 2 respectively
C. 19 and 8 respectively
D. 17 and 10 respectively
18. What volume of 12.0 M HC1is required to prepare
75.0 mL of 3.50 M HC1?
A. 21.9 mL
B. 0.560 mL
C. 257 mL *
D. 75.0 Ml
19. Which of the following will change the value of
26.The reaction C1L + Oi-* CH,C14 HD is an
example of:
A free radical substitution
An electrophilic substitution
A nucleophilic substitution.
A nuclcophilic.eddition.
fe
* _
27. Which of the following specie is a Lewis base?
A. AlClj
B. BFj
C. oir
D. H*
Kc?
A. Concentration changes
B. Pressure changes
C. Temperature change
t>. Employing a catalyst
