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PLZ HELP!!!
You are given a white, crystalline powder that dissolves in water to produce a solution that conducts electricity. You are told that the compound may either be CaCl2, NO2, or SO2. Which is it? How do you know?

Respuesta :

Answer:

A white, crystalline powder that dissolves in water to produce a solution that conducts electricity is CaCl2(Calcium chloride)

Explanation:

  • This is because CaCl2 is ionic - compound .Ionic compounds dissolved in water and conducts electricity due to  presence free ions.(Ca2+ , Cl-)
  • SO2 and NO2 : Exist in the form of gas . Both are covalent and Do not produce ions in water . Hence non- conducting.
  • NO2 is brown gas and SO2 is colourless gas

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