100% de satisfacción garantizada Inmediatamente disponible después del pago Tanto en línea como en PDF No estas atado a nada
logo-home
Buscado previamente por ti
Buscado previamente por ti
logo
Topic 10 - Equilibrium I - Revision Notes 2015 3,64 €
Añadir al carrito
Navegar rápidamente a
Vista previa
  2.  
  3. Pearson (PEARSON)
  4.  
  5. Chemistry 2015
  6.  
  7. Unit 10 - Equilibrium I

Notas de lectura

Topic 10 - Equilibrium I - Revision Notes 2015
 1 veces vendidas
  • Grado
  • Unit 10 - Equilibrium I
  • Institución
  • Pearson (PEARSON)

A comprehensive in-depth, specification led, revision booklet of the 2015 spec chemistry AS level course. Written during AS studies by an AS student, meaning it is written in an easily comprehensible stance for any student wishing to find extra resources to revise from.

Vista previa 3 fuera de 10  páginas

Información del documento

  • 4 de septiembre de 2016
  • 10
  • 2015/2016
  • Notas de lectura
  • Desconocido
  • Todas las clases

Temas

  • chemistry
  • edexcel
  • 2015 spec
  • chapter 10
  • revision
  • chemistry 2015
  • edexcel new spec
  • equilibrium
  • notes
  • edexcel a level chemistry revision notes

Escuela, estudio y materia

  • A/AS Level
  • Pearson (PEARSON)
  • Chemistry 2015
  • Unit 10 - Equilibrium I
Todos documentos para esta materia (1)

Vendedor

avatar-seller
acook99

Comentarios recibidos

Vista previa del contenido

A Cook 2016
Chapter 10 - Chemical Equilibrium

1. know that many reactions are readily reversible and that they can reach a state of dynamic
equilibrium in which:
i the rate of the forward reaction is equal to the rate of the backward reaction
ii the concentrations of reactants and products remain constant

Irreversible and Reversible reactions

When a mixture of hydrogen and oxygen in a 2:1 molar ratio is ignited, water is produced. There is
very little, if any, uncombined hydrogen or oxygen remaining at the end of the reaction. We often
describe such reactions as ‘irreversible’.

Most combustion reactions fall into this category since they are highly exothermic. That is, ∆H is
large and negative.

However many reactions, particularly organic chemistry, for which ∆H is small. These reactions
may not go to completion. At the end of the reaction, detectable amounts of the reactants remain,
mixed with the product. Such reactions are called ‘reversible’ reactions.

The reaction between hydrogen and iodine

If a mixture of hydrogen and iodine in a 1:1 ratio is heated to 573 K in a closed container, about
90% of the hydrogen and iodine reacts to form hydrogen iodide. Provided that the reaction mixture
remains closed in the container at 573 K, 10% of the hydrogen and iodine will remain unreacted no
matter how long we leave the reaction mixture.

If a sample of hydrogen iodide is heated to 573 K in a closed container, it partially decomposes,
and produces an identical equimolar solution of hydrogen and iodine seen in the from the
reactants.

This reaction is clearly seen to be reversible, and when there is no more change in concentrations
of products or reactants then it is said to be in ‘equilibrium’.

The symbol ⇌ is used to show a reversible reaction.

H2(g) + I2(g) ⇌ 2HI(g)

When the reaction is written in this way, the reaction between hydrogen and iodine is referred to a
the forward reaction. And the decomposition of hydrogen iodide into hydrogen and iodine is called
the backwards reaction.

How is equilibrium established?

When a mixture of hydrogen and iodine is heated, the two gases start to react and form hydrogen
iodide. With increasing time, the concentrations of hydrogen and iodine decreases so the rate of
the forward reactions decreases.

As soon as some hydrogen iodide is formed, it slowly starts to decompose. With increasing time,
however, the concentration of hydrogen iodide increases, so the rate of the backward reaction
increases.

Eventually the rates of the forward and backward reaction become equal and after this point there
is NO FURTHER CHANGE in the concentrations of the reactants or products. The system is now

Los beneficios de comprar resúmenes en Stuvia estan en línea:

Garantiza la calidad de los comentarios

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

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

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 acook99. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy this summary for 3,64 €. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

45,681 summaries were sold in the last 30 days

Founded in 2010, the go-to place to buy summaries for 15 years now

Empieza a vender

Vistos recientemente

Resumen ·

(0)

Leereenheid 2: Te kennen uit ppt & padlet

Examen ·

(0)

SDI chapter 4 exam questions with answers

Examen ·

(1)

ACA Final Exam Questions and Answers 2023

Examen ·

(0)

Fresenius Exam Questions and Answers 2023

Lote ·

(0)

Child and Adolescent Psychopathology Notes All

Resumen ·

(0)

Samenvatting Inleiding Onderzoeksmethoden

Examen ·

(0)

NR 324 Head To Toe Assessment Script Final 2023

3,64 €  1x  vendido
  • (0)
Añadir al carrito
Añadido