JEE Main & Advanced Chemistry Solutions / विलयन Question Bank Topic Test - Solutions

  • question_answer
    Match List I with List II and select the correct answer using the code given below the lists:
    List (I) List (II)
    [A] 50 mL of 3M HCl solution +150 mL of 1 M \[FeC{{l}_{3}}\] solution (p) 4.17 m
    [B] An aqueous solution of NaCl with mole fraction of NaCl as 0.1 (q) \[[C{{l}^{-}}]=3M\]
    [C] 20% (w/w) propanol \[({{C}_{3}}{{H}_{7}}OH)\] solution (r) \[[{{H}^{+}}]=2.75M\]
    [D] 10.95% (w/v) HCl solution (s) 6.1 m

    A) A-r, B-s, C-p, D-q               

    B) A-q, B-s, C-r, D-q

    C) A-q, B-s, C-p, D-q       

    D) A-q, B-r, C-p, D-s

    Correct Answer: C

    Solution :

    [c]
    [a] \[[C{{l}^{-}}]=\frac{50\times 3+150\times 1\times 3}{200}=\frac{600}{200}=3M\]
    [b] Molality \[=\frac{0.1}{0.9\times 18}\times 1000=6.17\,m\]
    [c] Molality \[=\frac{10\times 1000}{60\times 90}=1.85\,m\]
    [d] Molarity of \[HCl=\frac{\frac{10.95}{36.5}}{100}\times 1000=3M\]
      


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