AS-Level Chemistry: June 2017 Paper 1 PP Flashcards
Write the full Electron Configuration for each of the following Species:
Cl-
Fe2+
(2 marks)
Cl-: 1s2 2s2 2p6 3s2 3p6
Fe2+: 1s2 2s2 2p6 3s2 3p6 3d6
Write an Equation, including State Symbols, to represent the process that occurs when the third Ionisation Energy of Manganese is Measured.
(1 mark)
Mn2+ (g) —–> Mn3+(g) + e-
State which of the Elements Magnesium and Aluminium has the Lower First Ionisation Energy.
Explain your answer.
(3 marks)
-Aluminium.
-Outermost Electrons in 3p Orbital.
-Higher in Energy / Further away from the Nucleus than the Outermost Electrons in Magnesium.
Give the meaning of the term Electronegativity.
(1 mark)
The Power of an Atom to Attract a Pair of Electrons in a Covalent Bond.
Explain how Permanent Dipole-Dipole Forces arise between Hydrogen Chloride Molecules.
(2 marks)
-Difference in Electronegativity leads to Bond Polarity.
-There is an Attraction between ∂+ on one Molecule & ∂- on the other.
Copper can be Produced from rock that contains CuFeS2.
Suggest two reasons why the Sulfur Dioxide By-Product of this Process is removed from the exhaust gases.
(2 marks)
-Prevents Acid Rain.
-Toxic OR Causes Breathing Problems.
Give the Oxidation State of Nitrogen in the following Species:
NO2 -
NO
(2 marks)
NO2 -: +3
NO: +2
Write a Half-Equation for the conversion of I- into I2.
(1 mark)
2I- —–> I2 + 2e-
State the Role of NO2 - in the Reaction with I-.
(1 mark)
Oxidising Agent.
Which is the correct Crystal Structure for the Substance named? (1)
A) Iodine: Simple Molecular
B) Diamond: Ionic
C) Sodium Chloride: Giant Covalent
D) Graphite: Metallic
A) Iodine: Simple Molecular
Which is the best technique to remove the Silver Chloride that Forms when Aqueous Solutions of Silver Nitrate and Sodium Chloride React? (1)
A) Refluxing
B) Evaporation
C) Filtration
D) Distillation
C) Filtration
Which statement about Astatine is Correct? (1)
A) Astatine has a Greater Electronegativity than Bromine.
B) Astatine is a Better Oxidising Agent than Bromine.
C) Astatine has a Greater Boiling Point than Bromine.
D) Astatine has a Greater First Ionisation Energy than Bromine.
C
Which statement about Time of Flight Mass Spectrometry is correct? (1)
A) The Current in the Detector is Proportional to the Ion Abundance.
B) Sample Particles Gain Electrons to Form Positive Ions.
C) Particles are Detected in the Order of their Kinetic Energies.
D) Ions are Accelerated by a Magnetic Field.
A
Chlorine exists as two Isotopes 35Cl and 37Cl in the ratio 3:1.
Which statement about Peaks in the Mass Spectrum of Cl2 is correct? (1)
A) Peaks at m/z = 70 and 74 in the ratio 3:1
B) Peaks at m/z = 70, 72 and 74 in the ratio 9:6:1
C) Peaks at m/z = 70, 72 and 74 in the ratio 9:3:1
D) Peaks at m/z = 7-0 and 72 in the ration 3:1
B
A 4.85g sample of Anhydrous Sodium Sulfate is Dissolved in Water and the Solution made up to 250cm^3 in a Volumetric Flask.
What is the Concentration in Mol dm^-3 of Sodium Sulfate in the Solution? (1)
A) 0.0341
B) 0.137
C) 0.163
D) 0.273
B
Which of these contains the greatest number of Atoms?
A) 127mg of Iodine
B) 1.54*10^-4 kg of Phosphorus
C) 81.0mg of Carbon Dioxide
D) 1.70*10^-4 kg of Ammonia
D
A 20.0cm^3 sample of a 0.400mol dm^-3 Aqueous Solution of a Metal Bromide (MBrn) Reacts exactly with 160cm^3 of 0.100mol dm^-3 Aqueous Silver Nitrate.
What is the Formula of the Metal Bromide? (1)
A) MBr
B) MBr2
C) MBr3
D) MBr4
B
Which Species has one or more Bond Angle(s) of 90’? (1)
A) CH4
B) NH4 +
C) ClF4 -
D) AlCl4 -
C
The Forward Reaction in this Equilibrium is Endothermic.
COCl2(g) ⇌ CO(g) + Cl2(g)
Which statement is correct? (1)
A) If the Total Pressure is Increased at Constant Temperature, the Proportion of COCl2 in the Equilibrium Mixture will Decrease.
B) Use of a Catalyst will Increase the Proportion of COCl2 in the Equilibrium Mixture at Constant Temperature and Pressure.
C) Reducing the Equilibrium Concentration of CO will Increase the value of the Equilibrium Constant.
D) Raising the Temperature from 373K to 473K will Increase the value of the Equilibrium Constant.
D
Which of these has the highest First Ionisation Energy? (1)
A) Na
B) Al
C) Si
D) Cl
D
What is the Empirical Formula of an Oxide of Nitrogen that contains 26% Nitrogen by Mass? (1)
A) NO2
B) N2O3
C) N2O5
D) N4O5
C
Which Species is not Produced by a Redox Reaction between Solid Sodium Iodide and Concentrated Sulfuric Acid? (1)
A) Na2SO4
B) H2S
C) S
D) SO2
A
