Advanced Higher Chemistry Project
Hello,
For my advanced higher chemistry project I am determining the iron concentration in spinach. I am nearly finished having made potassium permanaganate, standardised it, made a reduced iron solution and titration that iron solution with the potassium permanganate. I think once I have completed these steps I will have finished. If someone could confirm that's correct and I don't need to do any other experiments (repeats or modifications).
As I am determining concentration, is it necessary to do a percentage yield calculation.
I am also struggling to write my underlying chemistry and was wondering if anyone had any ideas.
Thank you very much
For my advanced higher chemistry project I am determining the iron concentration in spinach. I am nearly finished having made potassium permanaganate, standardised it, made a reduced iron solution and titration that iron solution with the potassium permanganate. I think once I have completed these steps I will have finished. If someone could confirm that's correct and I don't need to do any other experiments (repeats or modifications).
As I am determining concentration, is it necessary to do a percentage yield calculation.
I am also struggling to write my underlying chemistry and was wondering if anyone had any ideas.
Thank you very much
Reply 1
Original post
by StamfordBlue10Hello,
For my advanced higher chemistry project I am determining the iron concentration in spinach. I am nearly finished having made potassium permanaganate, standardised it, made a reduced iron solution and titration that iron solution with the potassium permanganate. I think once I have completed these steps I will have finished. If someone could confirm that's correct and I don't need to do any other experiments (repeats or modifications).
As I am determining concentration, is it necessary to do a percentage yield calculation.
I am also struggling to write my underlying chemistry and was wondering if anyone had any ideas.
Thank you very much
For my advanced higher chemistry project I am determining the iron concentration in spinach. I am nearly finished having made potassium permanaganate, standardised it, made a reduced iron solution and titration that iron solution with the potassium permanganate. I think once I have completed these steps I will have finished. If someone could confirm that's correct and I don't need to do any other experiments (repeats or modifications).
As I am determining concentration, is it necessary to do a percentage yield calculation.
I am also struggling to write my underlying chemistry and was wondering if anyone had any ideas.
Thank you very much
I've arranged the points as follows:
(1) the experimental procedure,
(2) calculations and handling of data:
-write the redox reaction in acidic solution,
-determine the KMnO4 concentration,
-calculate iron concentration in spinach.
Percent yield is not important because it shows how reactants are turned into product. It is a key measure for judging, comparing, and refining chemical processes.
(3) a review of your current progress, what remains to be done, and justifications for In analysis,
(4) a brief summary of the relevant chemistry for your theory section,
and some writing and presentation tips.
When discussing underlying chemistry, concentrate on the core chemical principles at work.
-Extraction of iron from spinach
-Oxidative titration with KMnO4
-The necessity of standardisation
-Error sources
Incomplete digestion (iron not released).
Incomplete reduction (Fe^3+ remains).
Interfering substances that also oxidise (e.g., ascorbate, catechols).
Endpoint determination – slight over/under‑pink may introduce error; use a pH‑indicator.
Ciao,
Sandro
(edited 2 months ago)
Reply 2
Original post
by StamfordBlue10Hello,
For my advanced higher chemistry project I am determining the iron concentration in spinach. I am nearly finished having made potassium permanaganate, standardised it, made a reduced iron solution and titration that iron solution with the potassium permanganate. I think once I have completed these steps I will have finished. If someone could confirm that's correct and I don't need to do any other experiments (repeats or modifications).
As I am determining concentration, is it necessary to do a percentage yield calculation.
I am also struggling to write my underlying chemistry and was wondering if anyone had any ideas.
Thank you very much
For my advanced higher chemistry project I am determining the iron concentration in spinach. I am nearly finished having made potassium permanaganate, standardised it, made a reduced iron solution and titration that iron solution with the potassium permanganate. I think once I have completed these steps I will have finished. If someone could confirm that's correct and I don't need to do any other experiments (repeats or modifications).
As I am determining concentration, is it necessary to do a percentage yield calculation.
I am also struggling to write my underlying chemistry and was wondering if anyone had any ideas.
Thank you very much
Percentage yield calculations shouldn’t be necessary. All you will need is to know how much spinach you are using and how much iron is present.
I’m not entirely sure I am following your procedure, but when you say you have made a reduced iron solution, how did you do that? After all, you need to selectively reduce Fe^3+ to Fe^2+ without introducing contaminants to the solution that would also react with KMnO4 - if memory serves, excess zinc and H2SO4 is probably the best reducing agent you could use. Have you also tested and accounted for things like oxalates in spinach that would also react with the KMnO4 and give a spuriously large titre?
Additionally, how many titrations did you carry out? If you did just one, you won’t have done enough and will need to re-reduce the iron solution and carry out enough to get a mean titre.
Quick Reply
Related discussions
- GYG cause I’m bored
- can't decide to advanced higher chemistry or higher computing pls help
- 2025-26 Advanced Higher Chemistry Group discussion
- Impeccable's GYG
- Anki Cards for Physics and Chemistry
- I'm completing S6 and I'm bored.. come ask me questions or just chat!
- advanced higher chemistry
- S6 Subject help
- Gateway To Medicine/and SQA appeals
- Advanced Higher Science Projects
- Advanced higher chemistry/Advanced higher biology
- my S5 gyg !
- Can I crash Advanced higher art as someone who didn't do Nat5?
- S6 subjects to study medicine
- Clippy's gyg
- Heart broken, Cambridge Medcine
- AH Physics Project
- St Andrews computer science
- Advanced Higher Project
- 5 Advanced highers
Latest
Trending
Last reply 3 weeks ago
AQA A level chemistry synthetic routes map - what is the best one to memorise?Last reply 6 months ago
AQA Chemistry Electrode Potentials Conventional Representation QuestionLast reply 8 months ago
OCR B Salters A Level Chemistry 2025 Advanced ArticleLast reply 8 months ago
Help with this chemistry question? (A2, acid-base equilibria)Articles for you
How The Student Room is moderated
To keep The Student Room safe for everyone, we moderate posts that are added to the site.
