Finding Q


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TimVintsDis4L
Posts: 104
Joined: Sat Aug 17, 2019 12:17 am

Finding Q

Postby TimVintsDis4L » Wed Mar 04, 2020 11:13 pm

When we are given a Cell Diagram and concentrations and asked to find the Q what do we use as the Products and Reactants. Would we not use the right side (cathode, reduced) side as the Product and the (anode,oxidized) side as the Reactant?

Renee Grange 1I
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Re: Finding Q

Postby Renee Grange 1I » Wed Mar 04, 2020 11:17 pm

You can write the total reaction to see what the products and reactions are. But, I believe the anode is usually the product and the cathode usually the reactant.

Brooke Yasuda 2J
Posts: 102
Joined: Sat Jul 20, 2019 12:17 am

Re: Finding Q

Postby Brooke Yasuda 2J » Thu Mar 05, 2020 12:37 am

Yes, the anode is the product and the cathode is the reactant. This makes sense because in the anode the concentrations of reactant are decreasing as it forms product in the cathode.

Mandeep Garcha 2H
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am

Re: Finding Q

Postby Mandeep Garcha 2H » Thu Mar 05, 2020 10:24 am

Q=anode/cathode. So you can plug in all the values you know for the equation and solve for the unknown.

Anthony Hatashita 4H
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Joined: Wed Sep 18, 2019 12:21 am

Re: Finding Q

Postby Anthony Hatashita 4H » Fri Mar 06, 2020 12:11 am

Q is anode/cathode usually. You can write out the full reaction equation to verify on a case to case basis.

Sanjana Borle 2K
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Joined: Fri Aug 09, 2019 12:15 am

Re: Finding Q

Postby Sanjana Borle 2K » Fri Mar 06, 2020 12:13 am

Since you flip the equation for the anode when writing out the total equation for a cell, it makes sense that Q would be anode/cathode because this way the anode becomes the product.

Juana Abana 1G
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Joined: Wed Sep 18, 2019 12:15 am

Re: Finding Q

Postby Juana Abana 1G » Fri Mar 06, 2020 7:26 am

Brooke Yasuda 2J wrote:Yes, the anode is the product and the cathode is the reactant. This makes sense because in the anode the concentrations of reactant are decreasing as it forms product in the cathode.



So then the anode is always the product and the cathode is always the reactant?

Jasmine Kim 1L
Posts: 71
Joined: Fri Aug 02, 2019 12:16 am

Re: Finding Q

Postby Jasmine Kim 1L » Fri Mar 06, 2020 7:50 am

Juana Abana 1G wrote:So then the anode is always the product and the cathode is always the reactant?

In most cases, yes, but I would always write out the reaction to be sure.


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