Other
Flowchart lab 4
- Course
- Institution
Uitgewerkt stappenplan voor lab 4 (examen lab)
[Show more]
Seller
Follow
jodiedemoor
Content preview
Stappenplan en flowchartStap 1: SO₃²⁻ en SO₄²⁻ scheiden van S₂O₃²⁻ en S²⁻
Neerslag Type neerslag (vlokkig of fijn) Besluit
Toevoegen Sr²⁺ ja Fijn en vlokkig SO₃²⁻ en/of SO₄²⁻
nee / geen SO₃²⁻ en geen SO₄²⁻
Reactievergelijking (toevoegen Sr²⁺) Type neerslag (vlokkig of fijn)
SrSO₃ Sr2+ + SO32- SrSO3 Fijne, witte neerslag
SrSO₄ Sr2+ + SO42- SrSO4 Witte, vlokkige neerslag
2+
Toevoegen van Sr (druppelsgewijs in overmaat toevoegen)
Gevormde neerslag filtreren bekomt: neerslag a en filtraat b
Bij neerslag a:
-> aan filtraat nog Sr2+ toevoegen en filtreren ter controle (tot geen neerslag meer gevormd
wordt)
Wasstap: 3X toepassen (laatste wasstap in proefbuis opvangen)
-> I3- (joodwater) toevoegen aan proefbuis => ontkleuring van joodwater bij
thiosulfaatanionen, dan extra wasstap
Stap 2: Aan- of afwezigheid van SO₃²⁻ en SO₄²⁻ aantonen
Toevoeging van 10 druppels HCL (2M)
Lost neerslag volledig op? Besluit
Toevoegen HCl 2 M ja SO₃²⁻ aanwezig
SO₄²⁻ afwezig
nee SO₄²⁻ aanwezig
Reactievergelijking (toevoegen HCl 2 M)
SrSO₃ SrSO3 + 2H+ H2SO3 + Sr2+
SrSO₄ SrSO4 + H+ HSO4- Sr2+
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller jodiedemoor. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.24. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
61001 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now