Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

What concentration of nitrogen should be present in a glass of water at room temperature. Assume a temperature of 25oC, a total pressure

of 1atm and the mole fraction of nitrogen in air of 0.78( KH for nitrogen is 8.42X 10-7 M/mm Hg)



This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
The given form of Henry's constant for solubility is
       KH = c_aq / p,        Henry's law
               p =  partial pressure of nitrogen in air above  water
               c_aq = concentration of nitrogen in water

 p = 0.78 atm = 0.78 * 760 mm Hg

c_aq = 0.78 *760 * 8.42 * 10^-7  M = 4.991 * 10^-4 M
           = 1.3796 * 10^-2 gm/litre
1 5 1
click on thank you link and select best answer
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts