anonymous
  • anonymous
*** I know this a different subject.*** If it requires 23.4 milliliters of 0.65 molar barium hydroxide to neutralize 42.5 milliliters of nitric acid, solve for the molarity of the nitric acid solution. Show all of the work used to solve this problem. Unbalanced equation: Ba(OH)2 + HNO3 Ba(NO3)2 + H2O
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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pratyush5
  • pratyush5
I am guessing you are unfamiliar with normality and equivalent concept right ?
anonymous
  • anonymous
A bit
anonymous
  • anonymous
I know stoichiometry

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pratyush5
  • pratyush5
Don't worry, I'll do this with mole concept
anonymous
  • anonymous
but I don't know on how to start
pratyush5
  • pratyush5
So first of all - Molarity X Volume = No of moles right ?
anonymous
  • anonymous
Not yet
anonymous
  • anonymous
Unless it is 0.65
pratyush5
  • pratyush5
Why this is definiton of molarity
pratyush5
  • pratyush5
I wasnt referring to question. Just a general insight.
pratyush5
  • pratyush5
|dw:1436897699148:dw|
anonymous
  • anonymous
Yes its is Balanced Equation: Ba(OH)2 2HNO3 ---> Ba(NO3)2 2H2O
pratyush5
  • pratyush5
What I am trying to say is you know the no of moles of barium hydroxide. Then from balanced eqaution you get moles of nitric acid corresponding to one mole of barium hydroxide. Then you equate moles by unitary method
pratyush5
  • pratyush5
Good ! Now as you can see that 1 mole of Baoh2 reacts with 2 moles of nitric acid So 15.21 millimoles will react with 30.42 millimoles ?
anonymous
  • anonymous
What unit 15.21 would be in
pratyush5
  • pratyush5
millimoles. Because you are multipling molarity with millilitres
pratyush5
  • pratyush5
Any doubt ?
anonymous
  • anonymous
ok so it is15.21 mmol Ba(OH)2
pratyush5
  • pratyush5
Yes
pratyush5
  • pratyush5
SO now from balanced equation we need double the millimoles of nitric acid ?
anonymous
  • anonymous
ok
anonymous
  • anonymous
30.42
pratyush5
  • pratyush5
So we need 30.42 millimoles of nitric acid |dw:1436898445233:dw|
pratyush5
  • pratyush5
Feel free to ask any doubts ?
anonymous
  • anonymous
I got 0.71576471
pratyush5
  • pratyush5
Yeah that'd be the right answer.
anonymous
  • anonymous
Thank you very much.
pratyush5
  • pratyush5
You are welcome :)

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