Lesson 3.3.11.2
3.3.11.2 Base properties Quiz: AQA Chemistry, Unit 3
20 questions
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Lesson 3.3.11.2, Base properties: 20 multiple choice questions for the AQA Chemistry (7405), Unit 3: Organic chemistry, written with Revision Ninja.
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The 20 questions
-
Which feature of an amine allows it to act as a Bronsted-Lowry base?
- Nitrogen lone pair
- Delocalised ring
- Ammonium ion
- C-N single bond
-
Which amine is the strongest base in the specification comparison?
- Phenylamine
- Benzene-1,3-diamine
- Ammonia
- Ethylamine
-
Why is phenylamine a weaker base than ethylamine?
- Inductive effect
- Steric hindrance
- Delocalised lone pair
- Higher mass
-
Why is ethylamine a stronger base than ammonia?
- Hydrogen bonding
- Steric hindrance
- Lone pair delocalisation
- Inductive effect
-
Which order lists the bases from strongest to weakest?
- Propylamine > ammonia > phenylamine
- Phenylamine > ammonia > propylamine
- Ammonia > propylamine > phenylamine
- Propylamine > phenylamine > ammonia
-
Which species is formed when ammonia accepts a proton?
- NH3+
- NH2+
- NH2-
- NH4+
-
What salt is formed when methylamine reacts with hydrogen chloride?
- Methylammonium chloride
- Methylammonium hydroxide
- Dimethylammonium chloride
- Methanamide chloride
-
Which ion makes an aqueous solution of an amine alkaline?
- Hydroxide ion
- Ammonium ion
- Hydronium ion
- Chloride ion
-
How does a higher pKb value relate to base strength?
- Weaker base
- Stronger base
- No effect
- Neutral solution
-
Which of these compounds has the lowest pKb value?
- Ammonia
- Ethylamine
- Nitrobenzene
- Phenylamine
-
Which group increases the availability of the nitrogen lone pair in an amine?
- Aryl group
- Carbonyl group
- Nitro group
- Alkyl group
-
What ion is formed when phenylamine reacts with a strong acid?
- Phenylamide ion
- Phenylammonium ion
- Nitrophenyl ion
- Phenoxide ion
-
What is the conjugate acid of ethylamine?
- CH3CH2NH4+
- CH3CH2NH3+
- CH3CH2NH-
- CH3CH2NH2+
-
What action defines an amine as a Bronsted-Lowry base?
- Hydride donor
- Proton donor
- Electron acceptor
- Proton acceptor
-
Which 0.1 mol dm-3 aqueous solution has the higher pH?
- Ammonia
- Water
- Phenylamine
- Ethylamine
-
Which species is the conjugate base of CH3NH3+?
- CH3NH2
- CH3NH4
- CH3NH-
- CH3NH3-
-
Which compound is a stronger base than phenylamine?
- Cyclohexylamine
- Benzene
- Nitrobenzene
- Benzoic acid
-
What mass of HCl is needed to neutralise 0.05 mol of ethylamine?
- 0.91 g
- 1.83 g
- 0.18 g
- 3.65 g
-
Which conjugate acid is the strongest acid?
- Methylammonium ion, CH3NH3+
- Ethylammonium ion, CH3CH2NH3+
- Ammonium ion, NH4+
- Phenylammonium ion, C6H5NH3+
-
How does a weak base behave when dissolved in water?
- Ionises partially
- Remains unreactive
- Fully dissociates
- Ionises completely
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