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waheguru

I have a question. When we do a hydrogen gas test, my teacher said the "popping" sound when a lit splint is placed in the test tube is a physical property - why? also when hydrogen does react with oxygen(when the lit splint is placed in the test tube containing hydrogen) does it form hydrogen peroxide The first quesiton is more important, the second is just for knowledge but please help me

  • one year ago
  • one year ago

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  1. cwrw238
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    well an explosion even if its just a pop is pretty physical, i would say!!. However seems more like chemical property to me - the splint starts a very fast reaction between hydrogen and oxygen where a lot of energy is released very quickye , hence the popping sound.

    • one year ago
  2. cwrw238
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    no the product of the reaction is water

    • one year ago
  3. waheguru
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    but H2 + O2 make h202 right?

    • one year ago
  4. sauravshakya
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    The popping sound is because hydrogen gas is a combustion gas.

    • one year ago
  5. waheguru
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    so its physical @sauravshakya

    • one year ago
  6. sauravshakya
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    I guess yes.

    • one year ago
  7. cwrw238
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    no the equation for reaction is 2H2 + O2 = 2 H2O

    • one year ago
  8. waheguru
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    also if something has a cumbustion reacition its reacting with oxygen right?

    • one year ago
  9. cwrw238
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    yep

    • one year ago
  10. waheguru
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    so why doesnt water drop when we hear the pop sound @cwrw238

    • one year ago
  11. cwrw238
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    aahh - because of the high temperature - it is generated as water vapour. on cooling you might see some water in test tube. But it will be only a little.

    • one year ago
  12. waheguru
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    thanks

    • one year ago
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