Anonymous
Anonymous asked in Science & MathematicsChemistry · 1 decade ago

metal+nitric acid gives?

we all know that metals react wid acids to form their respective salts and also hydroge.why is it that wen metals react wid nitric acid somthng els happens. pleez explain me d process

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  • 1 decade ago
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    Nitric acid is a very strong oxidizing agent, so on reaction with metals, it gives salt (nitrate), nitrogen dioxode and oxygen.

    E.g: Cu + HNO3 ---> Cu(NO3)2 + NO2 + O2

    HNO3 self undergoes reduction to NO2 and metals reacting are oxidized.

    Metal with HCl give salt and hydrogen and with dilute sulphric acid give salt and hydrogen too, but if you use concentrated sulphuric acid with some metals, then SO2 can be released, because again with more concentration, sulphuric acid becomes a stronger oxidizing agent and gets reduced to SO2 in a redox reaction.

    EDIT: The reaction above for copper occurs with concentrated nitric acid; if dilute nitric acid is used, NO would be released instead of NO2.

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  • 1 decade ago

    Ni-trick as$-id cuntanes sum "nitronium ion" (NO2+) witch iz a vary powurfull oxydiz-ing agnt. It goz acorrdin 2 da eekwshun:

    2 HNO3 <--> H20 + NO2+ + NO3-

    Maybe consider an English tutor as well?

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  • Anonymous
    1 decade ago

    well nitric acid is a strong oxidising agent,it oxidises the nascent hydrogen formed to water & the metal is reduced to form salts

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  • 4 years ago

    when copper(Cu) reacts with nitric acid(HNO3) : Cu + 2HN03 -> CuNO3 + NO2< ↑> + H2O

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