Summary
Formulae and amounts of substance, Nomencalture and Isomerism Summary Sheet
- Institution
- CCEA
Formulae and amounts of substance, Nomenclature and Isomerism Summary Sheet
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
Content preview
Formulae and amounts of substanceEmpirical formula: The simplest whole number ratio of the atoms of each element in a
compound (molecular formula shows actual no.of atoms of each element in one molecule of
a substance
Molar gas volume: The volume of 1mol of gas under specified conditions of temperature
and pressure (e.g. 24dm3 at 20oc and 1atm pressure)
Number of moles = gas volume
Molar gas volume
Formula of an unknown hydrocarbon
Isomerism
CXHY + (x+ y/4)02 → XC02 + y/2 H20
Structural Stereoisomerism
Percentage yield
-Chain -E-Z
Percentage yield = actual yield
-Positional -Optical
Theoretical yield (x100)
- Functional Group
Atom economy
Mass of desired product
Total mass of products (x100)
Isomerism
Structural Isomers: Molecules with the same molecular formula but a different structural
formula
Chain isomerism: In which the molecules have the same molecular formula but a different
arrangement of the atoms in the carbon chain
Positional Isomerism: In which the molecules have the same functional group but have it in
a different position in the molecule
Functional group isomerism: Which the molecules have the same molecular formula but
have the different functional groups
Geometric Isomerism
Geometric isomers: Molecules which have the same structural formula but different
arrangement of atoms due to the presence of one or more C=C bonds
-C=C restricts rotation
-If higher priority groups (highest atomic numbers) are on the same side of the C=C it is Z, if
not it is E
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 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 TiarnanMcKeever. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £2.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now