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Assertion :brown fumes of Nitrogen dioxide …

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Assertion :brown fumes of Nitrogen dioxide are produced when Lead Nitrate is heated. Reason : Nitrogen dioxide gas is produced as a byproduct due to thermal decomposition of Lead Nitrate . which is the correct answer from the options

    • Posted by Shreya Mittal 4 years, 5 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Preeti Dabral 4 years, 5 months ago

    Assertion : Brown fumes are produced when lead nitrate is heated.

    This is true.

    When lead nitrate is heated strongly, NO2 and O2  are given out.

    In this decomposition reaction, the colourless compound lead nitrate forms a yellow compound, lead monoxide, and brown fumes of nitrogen dioxide gas are evolved.

    Reason: Nitrogen dioxide is produced as a by product due to the decomposition of lead nitrate.

    This is true.

    2 Pb(NO3)2 → 2 PbO  + 4 NO2 + O2

    Both Assertion and Reason are correct and Reason explains the assertion.

    Option A is correct.

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