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Solutions question

2017 · 8 Apr · Shift 1 · Q21
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Solutions question

2017 · 8 Apr · Shift 1 · Q21

JEE MainChemistrySolutionsMCQ+4 / −1
5 g of Na2SO4Na_2SO_4Na2​SO4​ was dissolved in x g of H2OH_2OH2​O. The change in freezing point was found to be 3.82oC. If Na2SO4Na_2SO_4Na2​SO4​ is 81.5% ionised, the value of x (Kf for water=1.86oC kg mol−1) is approximately : (molar mass of S = 32 g mol−1 and that of Na = 23 g mol−1)
  1. A
    15 g
  2. B
    25 g
  3. C
    45 g
  4. D
    65 g
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