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    A mixture of 80 cm3 CO and 150 cm3 O2 was exploded .
    After cooling the residual gas was shaken with sodium hydroxide solution.
    Which gas would be absorbed by the sodium hydroxide , and why ?
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    The answer is CO2. Sodium Hydroxide, an alkali, is what's known as a Carbon Dioxide scrubber and it absorbs all of the CO2. If you're studying Higher Biology, you'll probably learn how alkali's are used in respirometer experiments to absorb the CO2 emitted by the organism as it respires.

    So the reactions would be:

    1. 2CO(g) + O2(g) → 2CO2

    2. 2NaOH(aq) + CO2(g) → Na2CO3(aq) + H2O(l)
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    (Original post by Apologetic Cube)
    The answer is CO2. Sodium Hydroxide, an alkali, is what's known as a Carbon Dioxide scrubber and it absorbs all of the CO2. If you're studying Higher Biology, you'll probably learn how alkali's are used in respirometer experiments to absorb the CO2 emitted by the organism as it respires.

    So the reactions would be:

    1. 2CO(g) + O2(g) → 2CO2

    2. 2NaOH(aq) + CO2(g) → Na2CO3(aq) + H2O(l)
    Thanks
 
 
 

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