Select Page

Week 2 – 9/9 – 9/10

___________________________________________________________________________

9/9 – Thursday – A Day – 2/3a Lab, 4 single

Main focus –
     a) To better understand the Standard Reduction Potential Table and apply in to 
          determine the Net E0cell – electromotor force (volts) for chemical reactions.
     
     b) Review the concepts of the Daniell Cell (battery/voltaic cell)

 

1. Review of Summer Institute Summer Institute and Summer Assignment Connections Form 
    used key below to review last question.

Today’s Worksheets:
Today’s Worksheets:

Summer Institute and Summer Assignment Connections Form KEY .pdf
Redox 4 – Net potentials Demonstrations worksheet 1213.pdf
View Download
Redox 4 – Net potentials Demonstrations worksheet 1213 key p.pdf
Standard Reduction Potential Table.pdf
View Download

 

2. Daniell Cell Review: I reviewed the concepts of the an example of a voltaic cell. Video posted under Last                                                               Friday that reviews this lesson.

3.  Standard Reductions Table Basics lesson:

 

        E0cell = NET VOLTAGE! (from redox reaction)
 
                       positive voltage = spontaneous = there IS a pathway that the universe allows = IT REACTS!
 
                      negative voltage = non spontaneous = there is a NO pathway that the universe allows = IT doesn’t
                                                                                                  under the current set of conditions 
Electron transport system, F vs O2 , S vs O as final electron acceptor, 
Na vs Cu for pipes, Gold inactivity
spontaneity and free Energy/ pathway of energy/ voltage
 
                                                  Cu in SnCl2  Reaction vs.  Sn in CuCl2

 

Today’s Net Potential lesson:  using the demonstration above.

 

 2/3a Lab – did not get to today due to assembly!
LAB Activity 1 – Making of batteries (voltaic or galvanic cell) – last 15 minute. In this Lab each person will make a pair of voltaic cells that if successfully created will power a 3 volt transistor radio.
 
                        a) Made one voltaic cell and identifies anode, cathode and tested voltage.
                            Identified the spontaneous process with positive volts
                            wrote half reactions, identified ox and red agents.
 
LAB 1 – Voltaic Cell.pdf

 ______________________

9/9 – Thursday Homework: –

1. Please make 1 more submissions for a  the Daniell Form (activity) re-posted below.           Please do so ONCE you have received your graded 1st submission from this weekend.

1 – Daniell Cell lecture:  This is from last weekend’s homework. You may need this for your 2nd and 3rd submission.

 

 
1 – Daniell Cell lecture: Form:  This form is based in the lecture above. You have 2 more submissions tonight.

 

 

rEnd of Thursday!   

_____________________________________________________________________________

9/10 – Friday – B Day – 2 single, 3/4 Lab

Main focus –
     a) To review concepts of spontaneity, voltage, amperage through the Standard
          Reduction Table.
     
     b) Review the concepts of the Daniell Cell (battery/voltaic cell) that includes
          spontaneity. 

 

1. Review of Yesterdays demo that reviews the positive and negative
       
Standard Net Potential (E0 cell) = voltages = potential difference = joules/C = Energy to move 
                                                                                                                                                              charge                         Voltages measure a pathway of electron flow (redox reactions) = Spontaneity = pathway!                                                                                                                                                                                                                 A pathway allowed by nature is driven by an increase in Entropy. Entropy is the measure of the dispersion on energy from a concentrated source to a less concentrated source.                                                                                                                                                                                                                                 This is the reason why Heat flows to Cold! or Stored Energy is eventually released OR                     Why a battery dies! Passive Transport!  Entropy gives us Free energy!!! Is there really 
    renewable energy?
 
E0cell = NET VOLTAGE! (from redox reaction)
 
                       positive voltage = spontaneous = there IS a pathway that the universe allows = IT REACTS!
 
                      negative voltage = non spontaneous = there is a NO pathway that the universe allows = IT doesn’t
                                                                                                                                              under the current set of conditions 

Today’s Worksheets:

Redox 4 – Net potentials Demonstrations worksheet 1213.pdf
View Download
Redox 4 – Net potentials Demonstrations worksheet 1213 key p.pdf
Standard Reduction Potential Table.pdf
View Download

 

2. Daniell Cell Review: I reviewed the concepts of the an example of a voltaic cell. Video posted above in  Thursday’s Homework reviews this lesson but today I will incorporate the concepts of spontaneity into it. It will include concepts from this weekends lecture.

I use a Danielle Cell demo to illustrate these concepts.

 

 3b/4 Lab – 
LAB Activity 1 – Making of batteries (voltaic or galvanic cell) – last 15 minute. In this Lab each person will make a pair of voltaic cells that if successfully created will power a 3 volt transistor radio.
 
                        a) Made one voltaic cell and identifies anode, cathode and tested voltage.
                            Identified the spontaneous process with positive volts
                            wrote half reactions, identified ox and red agents.
 
LAB 1 – Voltaic Cell.pdf

 ______________________

9/10 – Friday Homework: –

1. Please make 1 more submissions for a  the Daniell Form (activity) posted above in Thursday’s post.  Please do so ONCE you have received your graded 2nd submission from this weekend.

2.  Read my *Connections NOTES –  POSTED IN This weeks notes (week 2 notes).

3. Watch the Voltaic Spontaneity lecture 2017 lecture below:
      Complete the Voltaic Spontaneity Form.  You have 3 submissions for this form.
 

4.  Complete the Voltaic Spontaneity Form.  You have 3 total submissions for this form this weekend and it is on auto-reply so make sure you have the correct email entered.

3 – Voltaic Spontaneity lecture:  This is for the homework form below..

 

 
4 – Voltaic Spontaneity Form:  This form is based in the lecture above.

 

End of Week 2!