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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: AdiDex on January 06, 2015, 03:35:10 PM

Title: Charge balancing ??
Post by: AdiDex on January 06, 2015, 03:35:10 PM

My teacher told me a concept of charge balancing. i was just listening to him by mistake i forgot to write down the concept.So  now my notebook is seeming unknown to me . Can anybody help in understanding this concept ??
now i have just one example and some examples which are incorrect i am just writing the correct example -

[H⁺]  = [OH^-] + [HSO₄^-] + 2[SO₄^2-]

I just wrote down it comes from charge conservation .
positive = Negative
No. of H⁺ = No. of OH^- + No. of HSO₄^- + 2(No. of SO₄^2-)

so now please help me out  ???
why we multiplied the [SO₄^2-]  by 2 ??

Title: Re: Charge balancing ??
Post by: mjc123 on January 06, 2015, 06:03:24 PM

Because it has two negative charges. The number of negative charges contributed by the SO₄^2- ions is twice the number of these ions.

Title: Re: Charge balancing ??
Post by: AdiDex on January 07, 2015, 04:16:53 AM

sorry brother i didn't get it. can you explain it by any another way ??
please elaborate it more .!

Title: Re: Charge balancing ??
Post by: Borek on January 07, 2015, 04:29:48 AM

Solutions are (almost) never charged - they are electrically neutral. That means amount of positive charges must equal amount of negative charges.

Title: Re: Charge balancing ??
Post by: mjc123 on January 07, 2015, 04:32:38 AM

Why is sodium hydroxide NaOH but sodium sulfate is Na₂SO₄?

Title: Re: Charge balancing ??
Post by: AdiDex on January 11, 2015, 10:46:53 AM

Sorry sorry..
I was just doing a damn bad silly mistake..
By the way thanks guys.. :)

Title: Re: Charge balancing ??
Post by: Borek on January 11, 2015, 03:23:36 PM

No need to be sorry, dumb mistakes are part of the learning curve.

And they don't end the day you graduate.