hydrogen

  1. D

    Hydrogen Bond Information for Kevlar

    Hi all, I'm trying to find information on the hydrogen bond length and hydrogen bond angle for kevlar before failure occurs (I have the equilibrium values). Would anyone happen to know these values and/or have experimental data/sources to corroborate them? If not for kevlar, would anyone happen...
  2. S

    Question Regarding Hydrogen Bonding

    So, a classmate stated that if a salt is dissolved in water, with a chemical change occurring but not a chemical reaction, energy is released when the hydrogen bonds break. It was clarified that this does not mean the breaking of bonds is exothermic, but that if the energy released from the...
  3. S

    Final state of Hydrogen atom?

    A ground state hydrogen atom absorbs a photon of light having a wavelength of 92.27 nm. It then gives off a photon having a wavelength of 383.4 nm. What is the final state of the hydrogen atom? Values for physical constants can be found here.
  4. C

    How to predict reaction rate of catalytic redox of hydrogen

    In a fuel cell hydrogen is split into protons and electrons catalytically, usually with platinum. If hydrogen fuel is flowing over the catalyst, how can I predict the number of reactions that will occur? I'm most interested in how it depends on the surface area of the contact between the...
  5. M

    the reaction b/w Hydroxylamine and hydrogen peroxide

    Can someone please provide me a detailed analysis of :(:( with illustrations. actually i have no idea where to start but i also need a detailed description about the reaction as i have to prepare a presentation on the reaction
  6. M

    Reaction between hydroxylamine and hydrogen peroxide

    Can someone please provide me a detailed analysis of the reaction b/w Hydroxylamine and hydrogen peroxide with illustrations. :confused::confused::confused::confused: actually i have no idea where to start but i also need a detailed description about the reaction as i have to prepare a...
  7. M

    Hydrogen Atom : Change in Energy & Wave Function

    If the proton in hydrogen is replaced by a positron-how does it effect Energy and Wave Function ? Help please !
  8. P

    Reaction of hydrogen gas to sulphur

    Hi,:p:confused: I would like your views on what would be the consequences of introducing hydrogen gas into the combustion process of marine diesel engines using heavy, high sulphur content fuels. The existing sulphur contents produce sulphur dioxide forming sulphuric acid and then ' acid...
  9. S

    Finding the percent concentration of hydrogen peroxide in a consumer product?

    We were given a lab last week in Chemistry class, the problem was to find the percent concentration of hydrogen peroxide in a consumer product. A titration happened between acidic hydrogen peroxide solution and KMnO4. Previously I calculated the KMnO4's molarity and placed it in the equation...
  10. N

    Hydrogen Spectra

    Why is the spectra measured in cm-1 and called wavenumbers? I read that to make the wavelength I need to do 1/cm, so this makes a logarithm - is the whole point to make a logarithm because the value is so small and for some reason my example is in cm rather than in something smaller?
  11. N

    Standard hydrogen electrode

    Is hydrogen used as standard because its best to accept electrons ?
  12. C

    Does hydrogen gas react with air?

    Will Hydrogen gas react with normal atmosphere air? or does it need 100% oxygen for the reaction to take place? any information would be great
  13. A

    Hydrogen produced?

    Hello again, The question I have is: "In an experiment 10.00g of magnesium is added to 50.00 ml of 0.1000 mol L^-1 hydrochloric acid. What is the volume of hydrogen gas produced, dried and measured at 25C and 760 mm Hg? (Molar mass of Mg is 243.1 g mol-1)" I understand V= nRT/P and the...
  14. H

    hydrogen halides

    Hydrogen chloride gai is prepared by adding conc sulfuric acid to solid sodium chloride. the same mehtod is used t prepare hydrogen iodide but the yield is very low when concentrated sulfuric acid is added to solid sodium iodide. Which deductions can be made from the above? 1. Iodide is a...