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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
    If 3 moles of \[{{H}_{2}}\] and 1 mole of \[{{N}_{2}}\] are completely converted into \[N{{H}_{3}},\] the ratio of initial and final volume at the same temp. and pressure will be:

    A) 1

    B) 3

    C) 2

    D) 4.20

    Correct Answer: C

    Solution :

    [c]
    \[{{N}_{2}}\] \[+\] \[3{{H}_{2}}\] \[\xrightarrow{{}}\] \[2N{{H}_{3}}\]
    Initially 1 3 0
    Final 0 0 2
    Pressure\[\alpha \]no. of moles
    \[{{H}_{i}}\] = \[1+3=4\]
    \[{{H}_{f}}\] = 2
    \[{{P}_{i}}\text{/}{{P}_{f}}\] = \[4\text{/}2=2\]


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