$A$ solution of non-volatile solute has a boiling point elevation of $1.75 \ K$. Calculate the molality of the solution $[K_{b} = 3.5 \ K \ kg \ mol^{-1}]$.

  • A
    $0.77 \ mol \ kg^{-1}$
  • B
    $0.69 \ mol \ kg^{-1}$
  • C
    $0.50 \ mol \ kg^{-1}$
  • D
    $0.35 \ mol \ kg^{-1}$

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