100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
eletrochemical cells summary £2.99   Add to cart

Summary

eletrochemical cells summary

 17 views  0 purchase

a coincise summary of electrochemical cells and electrode potentials in bullet points, including the equation to calculate electrode potentials description of reodx reactions at the negative electrode and positive electrode a summary of fuel cells, non-rechergeable batteries and rechargeable bate...

[Show more]

Preview 1 out of 3  pages

  • February 29, 2024
  • 3
  • 2023/2024
  • Summary
All documents for this subject (40)
avatar-seller
erikakumar

Available practice questions

Flashcards 10 Flashcards
£2.99 0 sales

Some examples from this set of practice questions

1.

what does a half cell consist of ?

Answer: the species present in a redox half-equation

2.

metal/metal ion half cell description

Answer: a metal rod dipped into a solution of its aqueous metal ion

3.

a phase boundary in the conventional representation of electrochemical cells

Answer: a line separating the solid of the metal from its solution

4.

what is a salt bridge ?

Answer: a piece of filter paper with KNO3- (inert) and mobile ions completing the circuit

5.

ion/ion electrochemical cell description

Answer: ions of the same element in different oxidation states

Electrode potentials
To compare electrode potentials of different species:measured against a common
reference or standard
● Ion concentration of 1.00 mol dm-3
● A temperature of 298 K
● A pressure of 100 kPa
- high resistance voltmeter: no current flows
Electrode potentials measured relative to a standard hydrogen electrode with 0.00V
Standard electrode potential (Eθ) is the potential difference (or voltage) produced when
a standard half-cell is connected to a standard hydrogen cell under standard conditions

The standard hydrogen electrode is a half-cell used as a reference electrode and
consists of hydrogen gas in equilibrium with H + ions of concentration 1.00 mol dm-3

● Reduction occurs at the positive electrode
● Oxidation occurs at the negative electrode
● Inert platinum wire or foil is used as an electrode to make electrical contact with
the solution
ELECTROCHEMICAL CELLS
○ Phase boundary (interface between a solid and a solution)
○ Salt bridge with mobile ions that complete circuit (KCl/KNO3- as soluble =
no precipitates affecting equilibrium position)
○ Highest oxidation state drawn next to salt bridge
○ Cell potential difference is shown with the polarity of the right hand
electrode
E.g. Zn (s)∣Zn2+ (aq) ∥Cu2+ (aq)∣Cu (s) E cell = +1.10 V
Copper half cell is more positive than zinc half cell: electrons flow from zinc to copper

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

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 erikakumar. 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)

73918 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

Start selling
£2.99
  • (0)
  Add to cart