Physics 5054 · O Level · Melting, boiling and evaporation

Melting, boiling and evaporation — practice question

A pupil places $37\,\text{g}$ of ice at $0\,^{\circ}\text{C}$ into $100\,\text{g}$ of water at $30\,^{\circ}\text{C}$. After mixing, the water and the melted ice both have a final temperature of $0\,^{\circ}\text{C}$. There is no transfer of heat to the surroundings or from them. The specific heat capacity of water is $4.2\,\text{J g}^{-1}\,^{\circ}\text{C}^{-1}$. Determine the specific latent heat of ice.

  • A$47\,\text{J g}^{-1}$
  • B$341\,\text{J g}^{-1}$
  • C$4700\,\text{J g}^{-1}$
  • D$12\,600\,\text{J g}^{-1}$

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