Half rxns

[605110118]

What differs when balancing acidic vs basic rxns?

[Ian Morris 3C]

with acidic you add H+, basic add oh-

[Charlyn Ghoubrial 2I]

Acidic: split equation in 2 half reactions and balance them (adding H2O to balance Os and H+ to balance Hs) then you cancel out your balanced electrons and anything else that needs cancelling and write your balanced equations
Basic: same steps as Acidic but then you add OH- on the side that has H+ to turn it into H2O and then subtract the least number of H2O from both sides to get your balanced equation
The organic chemistry tutor has a great video on this (they’re separate videos so make sure to search for both of them)

[Celine 1F]

When balancing acidic solutions, you would add H2O to balance the O's and then add H+ to balance the H's out. For balancing basic solutions, you would add H2O to balance the O's and then add H2O to the other side and OH- on the opposite side. From here, you would balance electrons for both types of solutions.

[Juana Abana 1G]

To balance acidic solutions you add H2O to balance the O's and then add H+ to balance the H's. Then you balance the electrons. However when balancing basic solutions you add H2O to balance the O's and then add H+ to balance the H's, but for every proton that you add you also add OH- to both sides of the equation.Then you balance the electrons

[Jocelyn Thorp 1A]

with acidic conditions you're balancing H2O and H+, and with basic conditions you're balancing H2O and OH-

[Junwei Sun 4I]

When balancing acidic reactions you balance O using H2O and H with H+
When balancing basic reactions you balance O using H20 and H with H2O then adding OH- to the opposite side

[Gurmukhi Bevli 4G]

In both cases, you are balancing O and H, when balancing acidic reactions, add H+ protons (to balance H) and H2O (to balance O), and for basic reactions, add OH- ions and H2O.

[Brandi 2C]

I do know that H+ is added in acidic reactions and OH- is added in basic, but I was wondering in which situations H3O+ would be used?

[Madeline Phan 1E]

Balancing in acidic solutions means adding H+ and H2O while balancing in basic solutions means balancing with OH- and H2O

[Nicholas_Gladkov_2J]

What differs when balancing acidic vs basic rxns?

The difference between balancing acidic versus basic reactions is that they both are the exact same, except in the end of balancing, you will add the same amount of OH- on both sides of the balanced equation equal to the number of H+ in the reaction.

[faithkim1L]

When balancing acidic reactions, add H+ and H20. For basic reactions, add H20 and OH-.

[005384106]

At what point do you add elections to the half reaction?

[Jeremy_Guiman2E]

At what point do you add elections to the half reaction?

you would add electrons at the end to balance charge on both sides.

[Vinita Saxena 2I]

Adding electrons is the very last step, once you add the H+ for acidic or OH-/H2O for basic you add electrons to balance out charge. When adding the half reactions together make sure to multiply the reactions if needed so the electrons are equal.

[Michelle N - 2C]

At what point do you add elections to the half reaction?

I believe it's when you need to balance out the charges.

[Eesha Chattopadhyay 2K]

When the solution is acidic, you balance the hydrogen ions by adding an H+ to the other side. When the solution is basic, you balance the hydrogen by adding an H20 to the side that needs the hydrogen and a OH- on the other side so that the side with the H20 has a net higher number of hydrogens.

[Sanjana K - 2F]

https://chem.libretexts.org/Bookshelves ... _Chemistry)/Electrochemistry/Redox_Chemistry/Balancing_Redox_reactions

Here's a pretty helpful link! In an acidic solution, the reaction is balanced after you've added your H+ to balance the hydrogens and electrons to balance charge but in a basic solution, you won't end up with H+ in your balanced reaction. Rather, for each H+, you need to add one OH-, which creates water (and then you balance charge with electrons) so your final balanced reaction in a basic solution will contain OH- and electrons.

[ABombino_2J]

Balance it the same as you would with acidic but add OH- at the end to cancel out the H+.

[Julia Holsinger_1A]

At what point do you add elections to the half reaction?

When all other elements are balanced and you just need to balance the charge of both sides

[Julia Holsinger_1A]

When balancing basic half reactions, how do you know which side to put the OH- versus the H2O?

[005384106]

Do you always add the H2O at opposite ends of where you have added OH or H+?

[205154661_Dis2J]

There are two really helpful resources on Lavelle's website where it tells you what to do for acidic and basic solutions. From that, you can see what differs basic rxns from acidic rxns.

[Rafsan Rana 1A]

I believe the side that has less hydrogens is the side you would add the OH because the purpose of adding it is to balance the number of hydrogen and this is only in basic solutions

[Rafsan Rana 1A]

To the question : "Do you always add the H2O at opposite ends of where you have added OH or H+?"

You should be adding the h20 first and then adding OH or the H to the opposite side to balance the number of hydrogens.

[vanessas0123]

Balancing acidic reactions means adding H2O to balance oxygens, and H+ to balance hydrogen.
Balancing basic reactions means adding H2O to balance oxygens, and OH- to balance everything else.

[zfinn]

with acidic you add h2o to balance oxygen and then simply h+ to balance the hydrogen, but with basic you add h2o to balance oxygen but then need to balance the hydrogens with oh-, while adding h2o to balance any additional oxygens.

[Orrin Zhong 4G]

When balancing basic reactions, balance the reaction just like you would an acidic reaction, but neutralize the H+'s with OH-'s.