Required practical 8: measuring the EMF of an electrochemical cell
Studied by 0 people
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/4
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
5 Terms
Describe the experiment to measure the EMF of an electrochemical cell
clean electrodes to remove protective oxide layer
Place copper strip in 50cm3of 1molddm-3 copper sulfate
Place zinc strip in 50cm3 of zinc sulfate
Use a strip of filter paper soaked in potassium nitrate for the salt bridge
Connect half cells by connecting the metals with crocodile clips
What is the purpose of the salt bride
-allows free moving ions to conduct a charge
Why wouldn’t you use potassium chloride as the salt bridge?
chloride ions can form complexes with the copper ions
Why wouldn’t you use a wire?
the metal wire would set up its own electrode
Why would you use a platinum electrode?
unreactive/inert and can conduct electricity
Note 
Flashcards (156)