Why are ionic compounds soluble? (part 2)
For a full understanding of why ionic compounds are soluble we need to consider both the enthalpy and entropy changes
Category: Calculations
Born-Haber cycles
Born-Haber cycles are simply a fancy Hess cycle transposed onto an energy level diagram and we can use them to
A note on Gibbs free energy
The change in Gibbs free energy, ΔG, is a convenient way to determine whether a reaction is spontaneous or feasible
How to determine whether a reaction is feasible
A spontaneous or feasible process must be accompanied by a positive change in total entropy (entropy of the universe). Whether
Continue readingHow to determine whether a reaction is feasible
Titration – experimental technique questions
Questions based on carrying out titration and interpreting the results are common both at AS and A level. Before we
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Advanced titration calculations
So now you are confident with run-of-the-mill, text book titration questions it’s time to tackle the types of question you
Basic titration calculations
You may have come across titration calculations at GCSE, and this post builds on that knowledge. The good news is
Working with concentration
It is assumed that you covered the basics of concentration at GCSE. Essentially, you need to be able to work
EXAM STYLE QUESTIONS – GAS CALCULATIONS
If you come unstuck working through the questions, leave a comment and I’ll get back to you. Good luck 😊!
Finding the mass of a volatile liquid
We can use the ideal gas equation to find the molar mass (relative molecular mass) of a volatile liquid. In