Basic Solutions

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melissa_dis4K
Posts: 106
Joined: Fri Sep 28, 2018 12:28 am

Basic Solutions

Postby melissa_dis4K » Wed Feb 27, 2019 9:31 pm

For basic solutions, how do you know what side to add the OH- on? Is there a guide to how to balance basic solutions in the textbook? Thanks! I really appreciate it.

Mya Majewski 1L
Posts: 89
Joined: Fri Sep 25, 2015 3:00 am

Re: Basic Solutions

Postby Mya Majewski 1L » Wed Feb 27, 2019 9:52 pm

In the textbook they give examples how to balance acidic and basic solutions within the electrochemistry chapter

Tuong-Minh Tran 1C
Posts: 30
Joined: Fri Sep 28, 2018 12:19 am

Re: Basic Solutions

Postby Tuong-Minh Tran 1C » Wed Feb 27, 2019 9:54 pm

For basic solutions, you generally want to place the OH- where there are less O atoms.

If you want to look for further clarification and have the 7th edition of the textbook, check out pages 541-543 and look at Example 6K.2.

Meigan Wu 2E
Posts: 66
Joined: Fri Sep 28, 2018 12:29 am
Been upvoted: 1 time

Re: Basic Solutions

Postby Meigan Wu 2E » Wed Feb 27, 2019 11:22 pm

For basic solutions, you first balance the O by using H2O. Then, you balance H by adding H2O to the side of the half reaction that needs H and adding OH- to the other side.

A De Castro 14B 2H
Posts: 75
Joined: Fri Sep 28, 2018 12:29 am

Re: Basic Solutions

Postby A De Castro 14B 2H » Wed Feb 27, 2019 11:41 pm

In basic solutions, the OH- ions tend to be on the reactants side in the oxidation half-reaction. Then, the OH- ions tend to be on the products side in the reduction half-reaction.

varunhariharan
Posts: 30
Joined: Mon Jan 07, 2019 8:16 am

Re: Basic Solutions

Postby varunhariharan » Thu Feb 28, 2019 4:16 pm

For basic solutions, H2O is used to balance the hydrogens. Then, when balancing oxygens, OH- should be added, and then H2O may need to be added again if the Hydrogens become unbalanced due to the addition of OH-.


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