anonymous
  • anonymous
If it requires 18.2 milliliters of 0.45 molar barium hydroxide to neutralize 38.5 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 yields Ba(NO3)2 + H2O I need help with this (: thanks!
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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apoorvk
  • apoorvk
Okay, so balance this first, we shall! \[\huge Ba(OH)_{2} + 2HNO _{3} -> Ba(NO _{3})_{2} +2 H _{2} O\]
apoorvk
  • apoorvk
now, 18.2 ml of 0.45M barium hydroxide means, 0.0081 moles of it. Now this is being used for some 'x' moles of of nitric acid. according to the balanced equation above, the no. of moles of nitric acid required is 2 times that of barium hydroxide. so, that means, we neutralised a total of 2*0.0081 moles of nitric acid. so, that means the solution contained 2*0.0081 moles of nitric acid, that is 0.0162 moles, in 38.5 ml of solution of it. so, you know now, 0.0.162 moles in --> 38.5ml of the solution. Can you try to find the molarity now?
anonymous
  • anonymous
I think so, I'll try, thank you.

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apoorvk
  • apoorvk
Okay, post your answer, if you need to verify. :)
anonymous
  • anonymous
Okay, I will (:
anonymous
  • anonymous
I have a feeling I did it wrong, but is it 0.210 M ?
anonymous
  • anonymous
I think I plugged in a wrong number O: Ooopsies!
anonymous
  • anonymous
easy fix though o.O Maybe
apoorvk
  • apoorvk
Uh-oh. the answer should be just the double of that. Molarity ---> moles of solute per litre of the solution Okay, you must have plugged in, 0.081 right? yeah easy fix. :)
anonymous
  • anonymous
Should it be 0.420?
anonymous
  • anonymous
:D yay! I am glad I did it right other than that one mistake! Thank you so much ^__^
apoorvk
  • apoorvk
No problems! =]
anonymous
  • anonymous
hey @lowcard2

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