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Author: Sarah Parkes

Cat Links Organic chemistry

Elimination reactions in halogenoalkanes

Posted on April 8, 2022March 4, 2025 Sarah Parkes

Halogenoalkanes undergo substitution reactions in the presence of a nucleophile such as the hydroxide ion, OH–, but most good nucleophiles

Continue readingElimination reactions in halogenoalkanes

Cat Links Organic chemistry

Explaining the reactivity of halogenoalkanes

Posted on April 8, 2022March 4, 2025 Sarah Parkes

Can we predict the trend in reactivity of fluoromethane, chloromethane, bromomethane and iodomethane based on any of the information below?

Continue readingExplaining the reactivity of halogenoalkanes

Cat Links Organic chemistry

Nucleophilic substitution in halogenoalkanes

Posted on April 8, 2022March 5, 2025 Sarah Parkes

Halogenoalkanes react with nucleophiles in nucleophilic substitution reactions. The halogen atom in the molecule is replaced by the nucleophile and

Continue readingNucleophilic substitution in halogenoalkanes

Cat Links Calculations, Exam question practice, Fundamentals

Titration – experimental technique questions

Posted on April 5, 2022October 2, 2024 Sarah Parkes

Questions based on carrying out titration and interpreting the results are common both at AS and A level. Before we

Continue readingTitration – experimental technique questions

Cat Links Calculations, Exam question practice, Fundamentals

Advanced titration calculations

Posted on April 5, 2022October 2, 2024 Sarah Parkes

So now you are confident with run-of-the-mill, text book titration questions it’s time to tackle the types of question you

Continue readingAdvanced titration calculations

Cat Links Calculations, Fundamentals

Basic titration calculations

Posted on April 5, 2022October 2, 2024 Sarah Parkes

You may have come across titration calculations at GCSE, and this post builds on that knowledge. The good news is

Continue readingBasic titration calculations

Cat Links Calculations, Fundamentals

Working with concentration

Posted on April 5, 2022October 2, 2024 Sarah Parkes

It is assumed that you covered the basics of concentration at GCSE. Essentially, you need to be able to work

Continue readingWorking with concentration

Cat Links Calculations, Exam question practice, Fundamentals

EXAM STYLE QUESTIONS – GAS CALCULATIONS

Posted on April 5, 2022October 2, 2024 Sarah Parkes

If you come unstuck working through the questions, leave a comment and I’ll get back to you. Good luck 😊!

Continue readingEXAM STYLE QUESTIONS – GAS CALCULATIONS

Cat Links Calculations, Fundamentals

Finding the mass of a volatile liquid

Posted on April 5, 2022October 2, 2024 Sarah Parkes

We can use the ideal gas equation to find the molar mass (relative molecular mass) of a volatile liquid. In

Continue readingFinding the mass of a volatile liquid

Cat Links Calculations, Fundamentals

Understanding the ideal gas equation

Posted on April 5, 2022January 22, 2025 Sarah Parkes

The ideal gas equation is an amalgamation of Boyle’s law, Charles’s law and Avogadro’s law and it describes the behaviour

Continue readingUnderstanding the ideal gas equation

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