What does the nitrate do in a concentration cell?


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Skyllar Kuppinger 1F
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Joined: Thu Jul 25, 2019 12:16 am

What does the nitrate do in a concentration cell?

Postby Skyllar Kuppinger 1F » Mon Feb 24, 2020 11:40 am

What is the point of the nitrate in this concentration cell?? (Image attached)What does it do? Does it keep the solution neutral? If so how?
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Vicki Liu 2L
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Joined: Sat Aug 24, 2019 12:15 am

Re: What does the nitrate do in a concentration cell?

Postby Vicki Liu 2L » Mon Feb 24, 2020 11:43 am

I believe nitrate is a spectator ion in this case. In other words, AgNO3 was dissolved to achieve Ag+ ions in solution but the NO3- is not involved in the actual reaction.

sarahforman_Dis2I
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Re: What does the nitrate do in a concentration cell?

Postby sarahforman_Dis2I » Mon Feb 24, 2020 12:01 pm

Skyllar Kuppinger 1F wrote:What is the point of the nitrate in this concentration cell?? (Image attached)What does it do? Does it keep the solution neutral? If so how?


I believe that the nitrate keeps the solution neutral though balancing out the Ag+ ions. That is why there is a porous disk, think of it as a form of salt bridge, in that it allows for ions to move to balance charge. I hope this helps!

CosetteBackus_4F
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Re: What does the nitrate do in a concentration cell?

Postby CosetteBackus_4F » Mon Feb 24, 2020 2:18 pm

While the nitrate is not necessarily involved in the reaction itself, its purpose, like the salt bridge, is to allow ions to flow so that the charge can balance.

Abhi Vempati 2H
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Re: What does the nitrate do in a concentration cell?

Postby Abhi Vempati 2H » Mon Feb 24, 2020 2:36 pm

Like everyone is saying, nitrate diffuses through the porous disk to balance the charges on both sides. The actual reaction that is occurring is for Ag+(aq) and Ag(s), but NO3- is important for the concentration cell as well.

Angela Patel 2J
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Re: What does the nitrate do in a concentration cell?

Postby Angela Patel 2J » Mon Feb 24, 2020 8:01 pm

You can't just put gold ions in solution, you need it to be dissolved from another compound.

Naneeta Desar 1K
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Re: What does the nitrate do in a concentration cell?

Postby Naneeta Desar 1K » Mon Feb 24, 2020 8:34 pm

In order to balance the charges nitrate flows through the porous disk.


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