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WorksheetsUnits 3 & 4 Multiple Choice Questions #1
Total questions: 14
Worksheet time: 7mins
Which of the following is the correct equilibrium expression for the reaction below? Fe₂O₃(s) + 3CO(g) ⇌ 2Fe(s) + 3CO₂(g)
[CO₂]³ / [CO]³
[CO₂]³ / [Fe₂O₃][CO]³
[Fe₂O₃][CO]³ / [Fe]²[CO]³
[Fe]²[CO₂]³ / [Fe₂O₃][CO]³
Consider the two reactions at equilibrium shown below.
2NO₂(g) ⇌ N₂O₄(s) ΔH = - 60 kJ mol⁻¹
N₂(g) + 3H₂(g) ⇌ 2NH₃(g) ΔH = - 92 kJ mol⁻¹
Which action will drive BOTH reactions to form more product?
reducing the pressure
increasing the reaction temperature
increasing the volume of the reaction vessel
removing the product from the reaction vessel
The table shows the colours of three indicators as the hydrogen ion concentration changes.
Which statement about the solution is correct?
The solution is weakly acidic with a pH of 6.
The solution is strongly acidic with a pH of 6.
The solution is weakly alkaline with a pH of 8.
The solution is strongly alkaline with a pH of 8.
Which statement about this titration is correct?
The acid was placed in the burette and the equivalence point occurred at pH 7.
The base was placed in the burette and the equivalence point occurred at pH 12.
The acid was placed in the conical flask and the equivalence point occurred at pH 7.
The acid was placed in the conical flask and the equivalence point occurred at pH 12.
Calculate the concentration of H⁺ ions in solution if the [OH⁻] = 1.8 x 10⁻⁹ M.
3.56 x 10⁻⁶ M
4.56 x 10⁻⁶ M
5.56 x 10⁻⁶ M
6.56 x 10⁻⁶ M
A protein is formed when:
amino acids are joined by peptide bonds.
amino acids are joined by glycosidic bonds.
glucose molecules are joined by peptide bonds.
glucose molecules are joined by glycosidic bonds.
Consider the following reaction: Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) Which statement is correct?
H2 is reduced.
Cl- is reduced.
Mg is oxidised.
Mg is reduced.
Deduce the oxidation number of Mn in K2MnO4.
+2
+4
+5
+6
The table lists some boiling point temperatures of a range of organic molecules. What is the main reason why carboxylic acids have a higher boiling point than alcohols?
Alcohols have a higher molecular weight than carboxylic acids.
Carboxylic acids form strong dispersion forces between molecules.
Carboxylic acids have strong ionic bonds between the acid molecules.
Carboxylic acids have stronger hydrogen bonding compared to alcohols.
Identify which of the compounds shown below would produce the following IR spectrum.
hexane
1-hexanol
3-hexanone
2-methylhexanal
Monosaccharides are organic molecules that contain either
a ketone group or an amine group and several hydroxyl groups.
a carbonyl group or an ester group and several hydroxyl groups.
an aldehyde group or a ketone group and several hydroxyl groups.
a carboxyl group or an aldehyde group and several hydroxyl groups.
Determine the set of conditions required for the production of ethanol by fermentation.
anaerobic, 35°c, yeast, glucose solution
anaerobic, 20°c, yeast, glucose solution
aerobic, 15°c, dilute sulfuric acid, starch
aerobic, 30°c, dilute sulfuric acid, starch
Identify which of these molecules is a monomer used in the production of an addition polymer.
CH₄
C₂H₆
C₂H₃Cl
C₃H₇Cl
Calculate the atom economy for the production of diethyl ether (CH₃OCH₃), when manufactured according to the following reaction. 2CH₃OH(g) → CH₃OCH₃(g) + H₂O(g)
28%
44%
56%
72%
