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Solutions question

2019 · 12 Jan · Shift 2 · Q19
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Solutions question

2019 · 12 Jan · Shift 2 · Q19

JEE MainChemistrySolutionsMCQ+4 / −1
Molecules of benzoic acid (C6H5COOHC_6H_5COOHC6​H5​COOH) dimerise in benzene. 'w' g of the acid dissolved in 30 g of benzene shows a depression in freezing point equal to 2K. If the percentage association of the acid to form dimmer in the solution is 80, then w is – (Its given that Kf = 5 K kg mol–1, Molar mass of benzoic acid = 122 g mol–1)
  1. A
    1.5 g
  2. B
    1.8 g
  3. C
    1.0 g
  4. D
    2.4 g
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