how do you know if a compound will be solid or aqueous?

Some reactions show BaCl2 or NaCl starting as aqueous and others show it as solid. How are you supposed to know which one it will be?

2 Answers

  • 5 years ago

    You will just have to know whether something dissolves in water or not to any useful extent. Like NaCl dissolves in water, so there are kajillions of gallons of seawater. Barium anything doesn't dissolve much at all, so they use it as x-ray contrast in your intestines. Sugar and water dissolve in each other (weird concept but...), stainless steel doesn't dissolve in water. Sodium metal dissolves (burns!) in water, Platinum doesn't dissolve in water but acts as a catalyst. So you will just have to know how well something dissolves before you know if it starts out aqueous or solid.

  • Scott
    Lv 7
    5 years ago

    Depends on the temperature.

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