Quaternary Ammonium Salts (AQA A-Level Chemistry): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
In quaternary ammonium salts, what has been replaced in the ion?
In quaternary ammonium salts, what has been replaced in the ion?
All four hydrogen atoms by alkyl groups
What is the charge on the nitrogen atom in a quaternary ammonium salt?
What is the charge on the nitrogen atom in a quaternary ammonium salt?
Positive ()
What forms when triethylamine reacts with bromoethane?
What forms when triethylamine reacts with bromoethane?
Tetraethylammonium bromide
Why does the reaction of halogenoalkanes with ammonia have low efficiency?
Why does the reaction of halogenoalkanes with ammonia have low efficiency?
Multiple substitutions produce a mixture
How can only a primary amine be obtained from the reaction?
How can only a primary amine be obtained from the reaction?
Add ammonia in excess
Why can no further reactions occur once a quaternary ammonium salt forms?
Why can no further reactions occur once a quaternary ammonium salt forms?
All four hydrogens are replaced
In which products are quaternary ammonium salts widely used?
In which products are quaternary ammonium salts widely used?
Hair conditioners and fabric softeners
Which part of a quaternary ammonium salt is hydrophilic?
Which part of a quaternary ammonium salt is hydrophilic?
The positively charged nitrogen end
Why are quaternary ammonium salts attracted to wet hair or fabric?
Why are quaternary ammonium salts attracted to wet hair or fabric?
Hair/fabric develops a negative charge
What effect do quaternary ammonium salts have at the water surface?
What effect do quaternary ammonium salts have at the water surface?
Reduce surface tension