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  5. Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ

JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Sample Paper Topic Test - Some Basic Concepts of Chemistry

  • question_answer
    How many grams of \[CaO\] are required to neutralize 852 g of \[{{P}_{4}}{{O}_{10}}\]?

    A) 1008 g

    B) 108 g   

    C) 1800 g

    D) 3600 g

    Correct Answer: A

    Solution :

    [a] This neutralization reaction will be :
    \[6CaO+{{P}_{4}}{{O}_{10}}\to 2C{{a}_{3}}{{(P{{O}_{4}})}_{2}}\]
    \[852g{{P}_{4}}{{O}_{10}}\equiv 3mol{{P}_{4}}{{O}_{10}}\]
    1 mole of \[{{P}_{4}}{{O}_{10}}\] neutralises 6 mol \[CaO\]
    3 moles of \[{{P}_{4}}{{O}_{10}}\]will netralise 18 moles of \[CaO\]
    Mass of \[CaO=18\times 56=1008g\]


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