Chemistry 9701 · AS & A Level · States of matter

States of matter — practice question

The table presents the physical properties of four substances. Which substance might be hydrogen chloride?

  • Amelting point $-119\,^{\circ}\text{C}$; electrical conductivity of solid: poor; electrical conductivity of liquid: poor; electrical conductivity of aqueous solution: insoluble
  • Bmelting point $-115\,^{\circ}\text{C}$; electrical conductivity of solid: poor; electrical conductivity of liquid: poor; electrical conductivity of aqueous solution: good
  • Cmelting point $-50\,^{\circ}\text{C}$; electrical conductivity of solid: poor; electrical conductivity of liquid: poor; electrical conductivity of aqueous solution: poor
  • Dmelting point $993\,^{\circ}\text{C}$; electrical conductivity of solid: poor; electrical conductivity of liquid: good; electrical conductivity of aqueous solution: good

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