A summary of topic 3, organised so the notes are easy to understand. The notes are on slides, so they can be printed out and used as revision cards or posters, for revision on the go. The notes cross-reference the specification so it is easy to see where each bit of information has come from. They ...
Oxidation & reduction Agents for change:
Ox = loss of e-, loss of H2 gain of O2, ox number ↑ Red agent = donates e-’s
Red = gain of e-, gain of H2, loss of O2, ox number ↓ - It is oxidised
Oxidation number = a measure of the e- density around each - Reduces something else
atom Ox agent = gains e-’s
- -ve number = e- density gained - It is reduced
- +ve number = e- density lost - Oxidises something else
Systematic names:
= tell you the +ve oxidation number
E.g. iron (ll) chloride: Fe = +2
iron (lll) chloride: Fe = +3
Potassium chlorate (V): Cl = +5
Ox numbers rules:
Group 1 = +1
Group 2 = +2
Al = +3
H = +1 (except metal hydrides → -1)
F = -1
O = -2 (except peroxides (H2O2) → -1 & compounds w/ F)
Cl = -1 (except w/ O & F)
Uncombined elements = 0
Half equations:
1. Balance non O/H
2. Balance O’s by adding H2O
3. Balance H’s by adding H+
4. Balance charge w/ e-’s
Disproportionation:
Redox = red & ox happening simultaneously
Disprop = 1 element simultaneously oxidised & reduced
e.g.
Los beneficios de comprar resúmenes en Stuvia estan en línea:
Garantiza la calidad de los comentarios
Compradores de Stuvia evaluaron más de 700.000 resúmenes. Así estas seguro que compras los mejores documentos!
Compra fácil y rápido
Puedes pagar rápidamente y en una vez con iDeal, tarjeta de crédito o con tu crédito de Stuvia. Sin tener que hacerte miembro.
Enfócate en lo más importante
Tus compañeros escriben los resúmenes. Por eso tienes la seguridad que tienes un resumen actual y confiable.
Así llegas a la conclusión rapidamente!
Preguntas frecuentes
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.
100% de satisfacción garantizada: ¿Cómo funciona?
Nuestra garantía de satisfacción le asegura que siempre encontrará un documento de estudio a tu medida. Tu rellenas un formulario y nuestro equipo de atención al cliente se encarga del resto.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller laurelgracefell. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for 3,69 €. You're not tied to anything after your purchase.
