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What is the concentration of H3O+?

What is the concentration of H3O+? Topic: Online homework solutions
May 22, 2019 / By Allie
Question: Many household cleaning products contain oxalic acid, , a diprotic acid with the following dissociation constants: , . Ka1 = 5.9*10^-2 Ka2 = 6.4*10^-5 Calculate the equilibrium concentration of H3O+ in a 0.20 M solution of oxalic acid. .1 is not correct. Online homework said it is incorrect. Thanks for the help though.
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Best Answers: What is the concentration of H3O+?

Uz Uz | 9 days ago
You need to use the quadratic equation on this one. H2A + H2O = HA^- + H3O^+ 0.20 M............x..........x Ka1 = [H3O^+][HA^-]/[H2A] Ka1 = x^2/(0.20 - x) = 5.9 x 10^-2 x^2 = 1.18 x 10^-2 - 5.9 x 10^-2x x^2 + 5.9 x 10^-2x - 1.18 x 10^-2 = 0 x = 0.083 M If you don't use the quadratic equation you get x = 0.11 M.
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Uz Originally Answered: How can i help him improve his concentration?
In my opinion, and I am only 17, television and computer games have to be cut down drastically and only used as a REWARD for getting things done like homework or other things that he needs to do. Get him into a pattern of brushing his teeth, taking his vitamin, and doing whatever homework he has right after school. Also, get him to learn more outside of school, only in my opinion a little bit, maybe like 20 minutes a day, maybe some new math, or little by little learn a new language. Also, get him to like to read a lot more if possible, in my opinion. I never liked to read and I suffered in speed reading and a little bit of comprehension.
Uz Originally Answered: How can i help him improve his concentration?
What grade and age is he first off? And have you had him tested for ADD or ADHD? As an educator I am well aware that both ADD and ADHD are too quickly diagnosed and used as excuses; however, I have also witnessed first handedly dramatic changes in students who had difficulties concentrating, focusing, and completing assignemnts once they were diagnosed and treated. Another possibility could be that your child is either finding it difficult to understand the material and therefore avoiding the work altogether or the child is finding the material too easy and is bored and unchallenged. In the case of the first scenario perhaps talking to the teacher or teachers about getting your child some extra one on one or small group help is possible. In the case of the second scenario asking his teachers to provide more challenging assignements ofr him including helping his peers with their work might be helpful. Either way I feel it is important that you talk not only to your son but also his teachers, the school counselor, and even your pediatrician or family physician beacuse you do NOT want him to fall behind making his educational experience more difficult or unpleasant.
Uz Originally Answered: How can i help him improve his concentration?
How old is he? if he's young enough (11 or under pehaps) you can make studying fun. My little brother is not good at studying at all and he's not all that great at school but this summer my mom made me keep giving he practice tests and it really helped improve his memory..also, a flash card game is really helpful at any age. im a junior and i always use flash cards to study..they pound the information into your head and its kind of like a little picture pops up! lol..well good luck. you can also try looking up "study tips" online. ______________________________________ Do you remember the game memory? That game works well with vocabulary or math. Try a timed thing where you see how many math problems he can get done and if he beats his time he gets, say, a dollar or a treat. Works well on my brother. My spanish teacher still uses some techniques like that with us..Do diagrams and stuff on a chalkboard and have him fill in the blanks. There's this fly swatter game that works for any subject too..have a couple of his friends come over and set up a wall with dates (history), words (english/vocab/spelling), answers (#'s as in Math), etc. You then have two people stand at the wall while you read off a question. The first student to slap the correct answer with his/her flyswatter wins the round and gets to continue to see if they can beat out all of their opponents. There are many other things to do too..Just E-mail me at [email protected] and i'm sure if you run out of thoughts i can give you some more.....good luck! P.S. these games will both make him quicker and wittier!!

Rodger Rodger
HCl is a sturdy acid and it thoroughly ionizes into its ions H3O+ and Cl-. HCl(aq) --> H3O^+ + Cl^- when you consider that a million mole of HCl produces a million mole of H3O+, the concentration of H3O+ in question is 0.00034M.
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Rodger Originally Answered: Concentration Problems?
I think you are perfectly normal for feeling this way. I can remember feeling this way in my junior year. Here are some tips... 1. Keep your distractions outside of school to a minimum. Boyfriends, friends, and extra-curriculars are hard on your studies. They are important for your development as a young woman, but just make sure they do not come before your schoolwork. 2. If you are sitting down to do homework, do all of your homework that you can without a computer first. Then, you won't be as tempted to zip on over to myspace to check out what your friends are doing. 3. Speaking of friends... studying with friends can be so helpful. If you and your friends can study without talking off topic, you could get your work done even faster. 4. Find a new place to study. Go to a different room in your house, a friends house, your school, or the library. The library can be especially helpful because chances are that most of the other people there are doing the same thing you are. 5. Give yourself a time limit. This wouldn't work for me, but if you can, set a timer and allow yourself 5-10 minutes to read your messages on myspace before you dig into your schoolwork. Then, when the time goes off...LOG OUT! :) After and hour or so of school work, set the time again to give yourself a little reward.
Rodger Originally Answered: Concentration Problems?
I also have the same problem with focusing, and my biggest problem is the internet. I always procrastinate and would just tell myself "okay, maybe I'll just check my mail really quick", but once i get on the computer, I end up sitting there for hours. I will also be a junior in high school this upcoming year. I'm taking honor and AP classes and I can't afford to get anymore C's this year. I'm aiming for all A's and possibly a couple B's here and there. Long story short, last year was my first year taking AP and I slacked off A LOT because of the computer. I would be on it till 3 am in the morning, wake up at around 6 am, meaning I only had 3 hours of sleep. When I come home from school which is around 3pm, I would sleep for hours and not do my work till the last minute (which obviously isn't enough time). My grades would keep on changing throughout the year because of my laziness. With all that being said, I think the biggest problems for teens these days is the internet (myspace). You should set aside your computer and promise to yourself that you would only go on once a week. Yes, I know, very hard, but that is what I'm planning to do this year. Good luck with everything. =) Btw, "T" has pointed out very helpful tips.

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