vera_ewing
  • vera_ewing
What is the concentration of hydrogen ions in solution when 0.30 mol of nitric acid are dissolved in enough water to make 500.0 mL of solution? A. 0.60 M B. 0.15 M C. 0.30 M D. 1.2 M
Chemistry
  • Stacey Warren - Expert brainly.com
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chestercat
  • chestercat
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vera_ewing
  • vera_ewing
@Cuanchi
vera_ewing
  • vera_ewing
@Australopithecus
Cuanchi
  • Cuanchi
what is your answer and how did you calculate it?

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Australopithecus
  • Australopithecus
Nitric acid is a strong acid so it fully dissociates into Nitrate and Hydrogen i.e. HNO3 -> H+ + -NO3 Secondly you need to use the formula: Molarity = Moles/Liters
Australopithecus
  • Australopithecus
to find the molarity of hydrogen
Australopithecus
  • Australopithecus
Do you follow?
vera_ewing
  • vera_ewing
So the molarity of hydrogen is 0.0006?
Cuanchi
  • Cuanchi
NO, the volume has to be in L you have to convert the mL to L
Australopithecus
  • Australopithecus
1L = 1000mL
Australopithecus
  • Australopithecus
so to convert: multiply 500mL by (1L/1000mL) note when you multiply mL cancels out and you are left with just liters
Australopithecus
  • Australopithecus
This works for almost all units
Australopithecus
  • Australopithecus
Unit conversion is important to know
Australopithecus
  • Australopithecus
There are tons of youtube videos on the topic
Australopithecus
  • Australopithecus
it works the same as exponent division
Australopithecus
  • Australopithecus
Show me your math
vera_ewing
  • vera_ewing
0.60 because Molarity = moles of solute/Liters of solution (500.0 mL = 0.5 Liters) M = 0.30 moles HNO3/0.5 L = 0.60 M H + ions in solution
vera_ewing
  • vera_ewing
The concentration of the nitric acid solution is 0.60 M, and the nitric acid will dissociate completely to H+ (aq) and NO3- (aq). This means the hydrogen ion concentration is equal to the starting concentration of the acid.
Australopithecus
  • Australopithecus
Yup

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